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be sonatural, Face masks, read from the back

Reference

The EU watchlist

Cosmetics sold in the EU run under Regulation (EC) No 1223/2009. Its annexes list what is forbidden outright, what is capped, and what has to be named on the pack. This page collects the entries that matter for face masks, including several that appear in none of the 215 masks we list, because knowing what should not be there is half of reading a label.

A product legally on sale in the EU already complies with all of this. The list is most useful for masks bought outside the EU, for old stock, and for understanding why a formula is put together the way it is.

Banned in EU cosmetics

Annex II. These may not be used at any concentration. If you see one on an ingredient list, the product was not made for the European market.

Avoid
Banned in EU cosmetics or credibly linked to serious harm.
What the levels mean ↗
  • Butylphenyl Methylpropional

    Lilial

    AvoidFragrance· in none of our masks

    Prohibited in EU cosmetic products. Commission Regulation (EU) 2021/1902 added 2-(4-tert-butylbenzyl)propionaldehyde, CAS 80-54-6, to Annex II as entry 1666, applicable from 1 March 2022, following its harmonised classification as a category 1B reproductive toxicant under Delegated Regulation (EU) 2020/1182. It was simultaneously removed from the Annex III declared-allergen list, where it had been entry 83.

    Regulation (EC) No 1223/2009, Annex II entry 1666, as inserted by Commission Regulation (EU) 2021/1902 · source ↗

  • Formaldehyde
    AvoidPreservative· in none of our masks

    Prohibited as a cosmetic ingredient in the EU since 2019. It was deleted from Annex V (former entry 5) and is listed among the substances prohibited in cosmetic products in Annex II. Separately, products containing formaldehyde-releasing preservatives must be labelled 'releases formaldehyde' where free formaldehyde exceeds 0.001% (10 ppm).

    Regulation (EC) No 1223/2009, Annex II (prohibited substances); deleted from Annex V by Commission Regulation (EU) 2019/831; labelling rule from Commission Regulation (EU) 2022/1181 · source ↗

  • Hydroquinone
    AvoidActive· in none of our masks

    Prohibited in cosmetic products. The only exception is hydroquinone in artificial nail systems at up to 0.02% after mixing, for professional use only. It may not be used in any skin product sold in the EU.

    Regulation (EC) No 1223/2009, Annex II entry 1339 (with the sole exception of Annex III entry 14) · source ↗

  • Hydroxyisohexyl 3-Cyclohexene Carboxaldehyde

    Lyral

    AvoidFragrance· in none of our masks

    Prohibited in EU cosmetic products. Commission Regulation (EU) 2017/1410 added HICC to Annex II as entry 1380, alongside atranol (entry 1381) and chloroatranol (entry 1382) from oakmoss and treemoss. Products containing it could not be placed on the EU market from 23 August 2019 and could not be made available on the market from 23 August 2021. It was removed from Annex III, where it had been entry 79.

    Regulation (EC) No 1223/2009, Annex II entry 1380, as inserted by Commission Regulation (EU) 2017/1410 · source ↗

  • Isobutylparaben
    AvoidPreservative· in none of our masks

    Prohibited in EU cosmetic products. Added to the Annex II list of prohibited substances by Commission Regulation (EU) No 358/2014, which entered into force on 30 April 2014, together with isopropylparaben, phenylparaben, benzylparaben and pentylparaben.

    Regulation (EC) No 1223/2009, Annex II (prohibited substances), as amended by Commission Regulation (EU) No 358/2014 · source ↗

  • Isopropylparaben
    AvoidPreservative· in none of our masks

    Prohibited in EU cosmetic products. Added to the Annex II list of prohibited substances by Commission Regulation (EU) No 358/2014, which entered into force on 30 April 2014, together with isobutylparaben, phenylparaben, benzylparaben and pentylparaben.

    Regulation (EC) No 1223/2009, Annex II (prohibited substances), as amended by Commission Regulation (EU) No 358/2014 · source ↗

  • Mercury

    Mercury and mercury compounds

    AvoidOther· in none of our masks

    Mercury and its compounds are prohibited in cosmetic products, with the sole exceptions of thiomersal and phenylmercuric salts as preservatives in eye products at 0.007% as mercury. EU mercury law separately bans mercury-added cosmetics from manufacture, import and export.

    Regulation (EC) No 1223/2009, Annex II entry 221 (exceptions at Annex V entries 16 and 17); Regulation (EU) 2017/852, Annex II point 7 · source ↗

  • Quaternium-15
    AvoidPreservative· in none of our masks

    Prohibited in EU cosmetic products since 2019. Its former Annex V entry 31 has been deleted, and cosmetics may not contain preservatives that are not on the Annex V list.

    Regulation (EC) No 1223/2009: former Annex V entry 31, deleted; prohibition effective 2019 (Commission Regulation (EU) 2019/831) · source ↗

Capped concentrations

Annex III and Annex V. Permitted, but only up to a stated limit, sometimes only in rinse-off products, and sometimes with a mandatory warning on the pack.

Well tolerated
No meaningful concern for most people; irritation is possible but rare.
Depends on you
Genuinely relevant for some people, or depends on dose and pH.
Worth knowing
EU-restricted, a common contact allergen, or subject to live debate.
What the levels mean ↗
  • Alpha-Arbutin
    Worth knowingActive· in 1 of our masks

    Permitted in face cream up to 2% and in body lotion up to 0.5%. Hydroquinone in the finished product must stay as low as possible and no higher than unavoidable trace levels. Introduced by Regulation (EU) 2024/996 and fully applicable since 1 November 2025.

    Regulation (EC) No 1223/2009, Annex III entry 377 (added by Regulation (EU) 2024/996) · source ↗

  • Aluminum Glycinate
    Well toleratedpH adjuster· in 1 of our masks

    Restricted since 2026 as an aluminium-containing ingredient. Regulation (EU) 2026/909, in force since 18 May 2026, added Annex III entry 381, a class entry covering aluminium-containing ingredients apart from a list of named exceptions in Annexes III, IV, V and VI. Aluminum glycinate is not one of those exceptions, so it is caught. The cap is expressed as aluminium rather than as the weight of the ingredient: 10.59% (as Al) in face leave-on products and 0.89% (as Al) in face and body rinse-off products. The SCCS set these levels on the contribution cosmetics make to total systemic aluminium exposure (SCCS/1662/23), not on a hazard specific to this salt. Products that do not comply may not be placed on the EU market from 1 January 2027, nor made available from 1 July 2028, so masks on sale today are unaffected.

    Regulation (EC) No 1223/2009, Annex III entry 381 (added by Regulation (EU) 2026/909; printed as entry 379 in the Official Journal of 28 April 2026 and renumbered to 381 by the corrigendum at OJ L, 2026/90354, 5.5.2026) · source ↗

  • Aluminum Hydroxide
    Well toleratedOther· in 1 of our masks

    Restricted since 2026 as an aluminium-containing ingredient. Regulation (EU) 2026/909, in force since 18 May 2026, added Annex III entry 381, a class entry covering aluminium-containing ingredients apart from named exceptions. Aluminium hydroxide does appear in one of those exceptions, Annex VI entry 27a, which is worth reading carefully: entry 27a regulates Titanium Dioxide (nano) as a UV filter and names aluminium hydroxide only as one of the permitted coatings on the particle. The exception therefore covers the aluminium carried on a coated nano titanium dioxide particle, not aluminum hydroxide used as an ingredient in its own right, which is caught by entry 381. The cap is expressed as aluminium rather than as the weight of the ingredient: 10.59% (as Al) in face leave-on products and 0.89% (as Al) in face and body rinse-off products. Products that do not comply may not be placed on the EU market from 1 January 2027, nor made available from 1 July 2028, so masks on sale today are unaffected.

    Regulation (EC) No 1223/2009, Annex III entry 381 (added by Regulation (EU) 2026/909; printed as entry 379 in the Official Journal of 28 April 2026 and renumbered to 381 by the corrigendum at OJ L, 2026/90354, 5.5.2026); also named in Annex VI entry 27a as a permitted coating for Titanium Dioxide (nano) · source ↗

  • Arbutin

    Beta-arbutin

    Worth knowingActive· in 3 of our masks

    Permitted in face cream up to 7%. Hydroquinone in the finished product must stay as low as possible and no higher than unavoidable trace levels. The restriction was introduced by Regulation (EU) 2024/996 and has applied in full since 1 November 2025.

    Regulation (EC) No 1223/2009, Annex III entry 378 (added by Regulation (EU) 2024/996) · source ↗

  • Benzoic Acid
    Well toleratedPreservative· in 4 of our masks

    Permitted preservative: max 0.5% in leave-on products, 1.7% in oral products and 2.5% in rinse-off products, expressed as the acid.

    Regulation (EC) No 1223/2009, Annex V entry 1 · source ↗

  • Benzyl Alcohol
    Well toleratedPreservative· in 17 of our masks

    Permitted preservative up to 1.0%; other uses (solvent, perfume) are governed by Annex III entry 45, which also requires it to be named on the label above 0.001% in leave-on and 0.01% in rinse-off products.

    Regulation (EC) No 1223/2009, Annex V entry 34 and Annex III entry 45 · source ↗

  • Benzyl Salicylate
    Depends on youFragrance· in 6 of our masks

    One of the original 26 declared fragrance allergens, and now capped by concentration as well. The labelling threshold is unchanged: it must be named on the pack above 0.001% in leave-on products and 0.01% in rinse-off products. Regulation (EU) 2026/909, in force since 18 May 2026, replaced Annex III entry 75 with a table of maximum concentrations by product type, acting on SCCS opinion SCCS/1656/23 of 26 October 2023. A face mask falls under either the leave-on skin row or the rinse-off skin row, and both are set at 0.5%. Products that do not comply may not be placed on the EU market from 1 January 2027, nor made available from 1 July 2028, so masks on sale today are unaffected.

    Regulation (EC) No 1223/2009, Annex III entry 75 (replaced by Regulation (EU) 2026/909) · source ↗

  • Butylparaben

    Paraben

    Worth knowingPreservative· in none of our masks

    Permitted preservative but restricted: maximum 0.14% (as acid), alone or summed with propylparaben; total parabens must not exceed 0.8%. Not allowed in leave-on products for the nappy area of children under three. The SCCS advised in 2025 that a much lower leave-on limit is needed for children; the Annex V figure was unchanged as of July 2026.

    Regulation (EC) No 1223/2009, Annex V entry 12a (introduced by Commission Regulation (EU) No 1004/2014) · source ↗

  • C15-19 Alkane
    Well toleratedEmollient· in 2 of our masks

    Permitted in cosmetics, but material corresponding to petroleum-derived hydrotreated middle distillates (CAS 64742-46-7) falls under the Annex II prohibition and may only be used if the full refining history is known and the source substance can be shown not to be a carcinogen. Sugarcane-derived material is not caught by this.

    Regulation (EC) No 1223/2009, Annex II entry 875 · source ↗

  • Chlorphenesin
    Depends on youPreservative· in 13 of our masks

    Permitted preservative, maximum 0.3% in all cosmetic products.

    Regulation (EC) No 1223/2009, Annex V entry 50 · source ↗

  • CI 42090

    Blue 1

    Well toleratedColourant· in 6 of our masks

    Permitted as a cosmetic colourant with no concentration limit, subject to the E 133 purity criteria. A separate restriction applies to its use as a hair dye, where it is capped at 0.5% in non-oxidative hair dye products.

    Regulation (EC) No 1223/2009, Annex IV entry 63 (colourant); Annex III entry 190 (Acid Blue 9 as a hair dye substance) · source ↗

  • Citral
    Worth knowingFragrance· in 13 of our masks

    One of the original 26 declared fragrance allergens, and now capped by concentration as well. The labelling threshold is unchanged: it must be named on the pack above 0.001% in leave-on products and 0.01% in rinse-off products. After the SCCS reassessed citral's sensitisation endpoint in 2024 (SCCS/1666/24), Regulation (EU) 2026/909, in force since 18 May 2026, replaced Annex III entry 70 with a table of maximum concentrations by product type. A leave-on mask falls under the leave-on skin row at 0.15%; a wash-off mask falls under the skin rinse-off row at 1.2%. Products that do not comply may not be placed on the EU market from 1 January 2027, nor made available from 1 July 2028, so masks on sale today are unaffected.

    Regulation (EC) No 1223/2009, Annex III entry 70 (replaced by Regulation (EU) 2026/909) · source ↗

  • Citrus Aurantium Bergamia (Bergamot) Fruit Oil

    Bergamot oil

    Worth knowingEssential oil· in 5 of our masks

    Two separate rules apply. Furocoumarins are prohibited under Annex II entry 358 except for the normal content of the natural essences used, and must be below 1 mg/kg in sun protection and bronzing products. Separately, Regulation (EU) 2023/1545 added Citrus Aurantium Bergamia Peel Oil as Annex III entry 352, so it must be declared as a fragrance allergen above 0.001% in leave-on and 0.01% in rinse-off products.

    Regulation (EC) No 1223/2009, Annex II entry 358 (furocoumarines) and Annex III entry 352 (inserted by Regulation (EU) 2023/1545) · source ↗

  • Citrus Medica Limonum (Lemon) Peel Oil

    Lemon peel oil

    Worth knowingEssential oil· in 7 of our masks

    Two rules apply. Furocoumarins are prohibited under Annex II entry 358 except for the normal content of the natural essences used, and must be below 1 mg/kg in sun protection and bronzing products. Separately, Regulation (EU) 2023/1545 added Citrus Limon Peel Oil as Annex III entry 353, requiring it to be declared as a fragrance allergen above 0.001% in leave-on and 0.01% in rinse-off products.

    Regulation (EC) No 1223/2009, Annex II entry 358 and Annex III entry 353 (inserted by Regulation (EU) 2023/1545) · source ↗

  • Cyclopentasiloxane

    D5

    Worth knowingSilicone· in 1 of our masks

    Capped at 0.1% w/w in wash-off cosmetics since 31 January 2020 and in leave-on cosmetics since 6 June 2026, under REACH Annex XVII entry 70. This is an environmental restriction, not a skin-safety one.

    REACH Regulation (EC) No 1907/2006, Annex XVII entry 70, as amended by Commission Regulation (EU) 2024/1328 · source ↗

  • Dehydroacetic Acid
    Well toleratedPreservative· in 8 of our masks

    Permitted preservative, maximum 0.6% expressed as the acid. Not permitted in aerosol dispensers (sprays).

    Regulation (EC) No 1223/2009, Annex V entry 13 · source ↗

  • Diazolidinyl Urea
    Worth knowingPreservative· in none of our masks

    Permitted preservative up to 0.5%. As a formaldehyde releaser, products containing it must carry the warning 'releases formaldehyde' where free formaldehyde exceeds 0.001% (10 ppm).

    Regulation (EC) No 1223/2009, Annex V entry 46; labelling rule in the preamble to Annex V as amended by Commission Regulation (EU) 2022/1181 · source ↗

  • DMDM Hydantoin
    Worth knowingPreservative· in none of our masks

    Permitted preservative up to 0.6%. Because it releases formaldehyde, any finished product containing it must be labelled 'releases formaldehyde' if free formaldehyde exceeds 0.001% (10 ppm), a threshold lowered from 0.05% by Regulation (EU) 2022/1181, applying from 31 July 2024.

    Regulation (EC) No 1223/2009, Annex V entry 33; labelling rule in the preamble to Annex V as amended by Commission Regulation (EU) 2022/1181 · source ↗

  • Imidazolidinyl Urea
    Worth knowingPreservative· in none of our masks

    Permitted preservative up to 0.6%. As a formaldehyde releaser, products containing it must carry the warning 'releases formaldehyde' where free formaldehyde exceeds 0.001% (10 ppm).

    Regulation (EC) No 1223/2009, Annex V entry 27; labelling rule in the preamble to Annex V as amended by Commission Regulation (EU) 2022/1181 · source ↗

  • Kojic Acid
    Worth knowingActive· in 2 of our masks

    Permitted only as a skin-lightening agent in face and hand products, up to 1%. The restriction follows the SCCS review of its possible endocrine-disrupting activity and has applied in full since 1 November 2025.

    Regulation (EC) No 1223/2009, Annex III entry 375 (added by Regulation (EU) 2024/996) · source ↗

  • Magnesium Aluminum Silicate
    Well toleratedThickener· in 12 of our masks

    Restricted since 2026 as an aluminium-containing ingredient, having previously appeared in no Annex. Regulation (EU) 2026/909, in force since 18 May 2026, added Annex III entry 381, a class entry covering aluminium-containing ingredients apart from a list of named exceptions in Annexes III, IV, V and VI. Magnesium aluminum silicate is not one of those exceptions, so it is caught. The cap is expressed as aluminium rather than as the weight of the clay: 0.89% (as Al) in face and body rinse-off products, the row a wash-off clay mask falls under, and 10.59% (as Al) in face leave-on products. The SCCS set these levels on the contribution cosmetics make to total systemic aluminium exposure (SCCS/1662/23). Products that do not comply may not be placed on the EU market from 1 January 2027, nor made available from 1 July 2028, so masks on sale today are unaffected.

    Regulation (EC) No 1223/2009, Annex III entry 381 (added by Regulation (EU) 2026/909; printed as entry 379 in the Official Journal of 28 April 2026 and renumbered to 381 by the corrigendum at OJ L, 2026/90354, 5.5.2026) · source ↗

  • Methylchloroisothiazolinone

    MCI

    Worth knowingPreservative· in none of our masks

    Permitted only as a 3:1 mixture of methylchloroisothiazolinone and methylisothiazolinone, at a maximum of 0.0015% and in rinse-off products only. The rinse-off-only restriction has applied since 16 July 2015 (Regulation (EU) No 1003/2014).

    Regulation (EC) No 1223/2009, Annex V entry 39, as amended by Commission Regulation (EU) No 1003/2014 · source ↗

  • Methylisothiazolinone

    MI

    Worth knowingPreservative· in none of our masks

    Banned in all leave-on cosmetic products since 12 February 2017 (Regulation (EU) 2016/1198). Permitted only in rinse-off products at a maximum of 0.0015%, a limit that applies since 27 April 2018 (Regulation (EU) 2017/1224).

    Regulation (EC) No 1223/2009, Annex V entry 57, as amended by Commission Regulation (EU) 2016/1198 and Commission Regulation (EU) 2017/1224 · source ↗

  • Methylparaben

    Paraben

    Well toleratedPreservative· in 6 of our masks

    Permitted preservative: maximum 0.4% as a single ester, or 0.8% total when mixed with other permitted parabens (expressed as 4-hydroxybenzoic acid).

    Regulation (EC) No 1223/2009, Annex V entry 12 · source ↗

  • Phenoxyethanol
    Well toleratedPreservative· in 71 of our masks

    Permitted preservative, maximum 1.0% in all cosmetic products.

    Regulation (EC) No 1223/2009, Annex V entry 29 · source ↗

  • Potassium Hydroxide
    Well toleratedpH adjuster· in 7 of our masks

    Annex III entry 15a covers potassium and sodium hydroxide: 5% max in nail cuticle solvents, 2% general-use and 4.5% professional hair straighteners, up to pH 12.7 as a pH adjuster in depilatories, and up to pH 11 for all other pH-adjusting uses.

    Regulation (EC) No 1223/2009, Annex III entry 15a · source ↗

  • Potassium Sorbate
    Well toleratedPreservative· in 20 of our masks

    Permitted preservative, maximum 0.6% expressed as sorbic acid.

    Regulation (EC) No 1223/2009, Annex V entry 4 · source ↗

  • Propylparaben

    Paraben

    Worth knowingPreservative· in 1 of our masks

    Permitted preservative but restricted: maximum 0.14% (as acid), alone or together with butylparaben; total parabens must not exceed 0.8%. Not allowed in leave-on products for the nappy area of children under three.

    Regulation (EC) No 1223/2009, Annex V entry 12a (introduced by Commission Regulation (EU) No 1004/2014) · source ↗

  • Retinol

    Retinol

    Worth knowingActive· in 5 of our masks

    Capped at 0.05% Retinol Equivalent in body lotion and 0.3% RE in all other leave-on and rinse-off products, including face masks. Any product containing Retinol, Retinyl Acetate or Retinyl Palmitate must carry the labelling 'Contains Vitamin A. Consider your daily intake before use'. Non-compliant products could not be placed on the EU market from 1 November 2025, and may not be made available on the EU market from 1 May 2027.

    Regulation (EC) No 1223/2009, Annex III entry 376, as inserted by Commission Regulation (EU) 2024/996 · source ↗

  • Retinyl Palmitate

    Vitamin A palmitate

    Worth knowingActive· in 3 of our masks

    Covered by the same limit as Retinol: 0.05% Retinol Equivalent in body lotion and 0.3% RE in other leave-on and rinse-off products, with mandatory labelling 'Contains Vitamin A. Consider your daily intake before use'. Non-compliant products could not be placed on the EU market from 1 November 2025 and may not be made available on the market from 1 May 2027.

    Regulation (EC) No 1223/2009, Annex III entry 376, as inserted by Commission Regulation (EU) 2024/996 · source ↗

  • Salicylic Acid

    BHA

    Depends on youExfoliant· in 15 of our masks

    Allowed up to 2% in most face products including masks, 3% in rinse-off hair products, and 0.5% in body lotion, eye shadow, mascara, eyeliner, lipstick and roll-on deodorant. A separate 0.5% cap applies when it is used as a preservative. Banned in preparations for children under 3, in oral products, and in anything that could expose the lungs by inhalation.

    Regulation (EC) No 1223/2009, Annex III entry 98 (as amended by Commission Regulation (EU) 2021/850) and Annex V entry 3 · source ↗

  • Sodium Benzoate
    Well toleratedPreservative· in 22 of our masks

    Permitted preservative, expressed as benzoic acid: max 0.5% in leave-on products, 1.7% in oral products and 2.5% in rinse-off products.

    Regulation (EC) No 1223/2009, Annex V entry 1 · source ↗

  • Sodium Dehydroacetate
    Well toleratedPreservative· in 5 of our masks

    Permitted preservative, maximum 0.6% expressed as dehydroacetic acid. Not permitted in aerosol dispensers (sprays).

    Regulation (EC) No 1223/2009, Annex V entry 13 · source ↗

  • Sodium Hydroxide

    Lye

    Well toleratedpH adjuster· in 38 of our masks

    Annex III entry 15a covers sodium and potassium hydroxide: 5% max in nail cuticle solvents, 2% in general-use and 4.5% in professional hair straighteners, up to pH 12.7 as a pH adjuster in depilatories, and up to pH 11 for all other pH-adjusting uses.

    Regulation (EC) No 1223/2009, Annex III entry 15a · source ↗

  • Sodium Salicylate
    Depends on youPreservative· in 1 of our masks

    Permitted preservative, maximum 0.5% expressed as salicylic acid. Not to be used in products for children under three, except shampoos. Non-preservative uses of salicylic acid are governed separately by Annex III entry 98.

    Regulation (EC) No 1223/2009, Annex V entry 3 (and Annex III entry 98 for other uses) · source ↗

  • Talc

    Talc

    Worth knowingClay / mineral· in none of our masks

    Permitted with no concentration limit, but powdery products intended for children under three must carry the warning 'Keep powder away from children's nose and mouth'. Asbestos is separately prohibited in cosmetics, and non-intended traces are only tolerated where technically unavoidable under Article 17.

    Regulation (EC) No 1223/2009, Annex III entry 59 (Talc: Hydrated magnesium silicate, CAS 14807-96-6) · source ↗

  • Titanium Dioxide

    Titanium dioxide

    Depends on youColourant· in 24 of our masks

    Permitted as a colourant (CI 77891) subject to E 171 purity criteria, and as a UV filter up to 25%, including a nano form with strict conditions. Powder forms containing 1% or more of particles of aerodynamic diameter 10 micrometres or less are limited to 25% in loose face powders and 1.4% (1.1% professional) in hair aerosol sprays, and are not permitted in other product types.

    Regulation (EC) No 1223/2009, Annex IV entry 143; Annex VI entries 27 and 27a (nano); Annex III entry 321 (inhalable powder form, added by Regulation (EU) 2021/850) · source ↗

  • Triclosan
    Worth knowingPreservative· in none of our masks

    Permitted only in a closed list of product types: toothpastes, hand soaps, body soaps and shower gels, non-spray deodorants, face powders and blemish concealers, and nail-cleaning products before artificial nails, at a maximum of 0.3%, and 0.2% in mouthwashes. It is not permitted in leave-on face products such as masks.

    Regulation (EC) No 1223/2009, Annex V entry 25 · source ↗

  • Zinc Gluconate
    Well toleratedActive· in 5 of our masks

    Covered by the Annex III entry for water-soluble zinc salts: maximum 1% expressed as zinc. Regulation (EU) 2026/909 restructures this entry from 1 January 2027, adding specific limits for toothpaste and mouthwash while keeping 1% as zinc for all other products, including face masks.

    Regulation (EC) No 1223/2009, Annex III entry 24 (amended by Regulation (EU) 2026/909) · source ↗

  • Zinc Oxide

    Zinc oxide

    Well toleratedUV filter· in 4 of our masks

    Permitted as a UV filter up to 25%, in both conventional and nano form; the nano form carries additional conditions and must not be used where the lungs could be exposed. Separately listed as the permitted colourant CI 77947 with no concentration limit.

    Regulation (EC) No 1223/2009, Annex VI entries 30 and 30a (nano); Annex IV entry 144 (CI 77947) · source ↗

Must be named on the label

Fragrance allergens can't hide inside the word “Parfum” once they pass a threshold: 0.001% in leave-on products, 0.01% in rinse-off. That is why some ingredient lists end in a run of names like Limonene, Linalool, Citral.

Well tolerated
No meaningful concern for most people; irritation is possible but rare.
Depends on you
Genuinely relevant for some people, or depends on dose and pH.
Worth knowing
EU-restricted, a common contact allergen, or subject to live debate.
What the levels mean ↗
  • Benzyl Alcohol
    Well toleratedPreservative· in 17 of our masks

    Permitted preservative up to 1.0%; other uses (solvent, perfume) are governed by Annex III entry 45, which also requires it to be named on the label above 0.001% in leave-on and 0.01% in rinse-off products.

    Regulation (EC) No 1223/2009, Annex V entry 34 and Annex III entry 45 · source ↗

  • Benzyl Benzoate
    Depends on youFragrance· in 2 of our masks

    One of the original 26 declared fragrance allergens. Must be named on the pack above 0.001% in leave-on products and 0.01% in rinse-off products. No maximum concentration is set for cosmetic use.

    Regulation (EC) No 1223/2009, Annex III entry 85 · source ↗

  • Benzyl Salicylate
    Depends on youFragrance· in 6 of our masks

    One of the original 26 declared fragrance allergens, and now capped by concentration as well. The labelling threshold is unchanged: it must be named on the pack above 0.001% in leave-on products and 0.01% in rinse-off products. Regulation (EU) 2026/909, in force since 18 May 2026, replaced Annex III entry 75 with a table of maximum concentrations by product type, acting on SCCS opinion SCCS/1656/23 of 26 October 2023. A face mask falls under either the leave-on skin row or the rinse-off skin row, and both are set at 0.5%. Products that do not comply may not be placed on the EU market from 1 January 2027, nor made available from 1 July 2028, so masks on sale today are unaffected.

    Regulation (EC) No 1223/2009, Annex III entry 75 (replaced by Regulation (EU) 2026/909) · source ↗

  • Citral
    Worth knowingFragrance· in 13 of our masks

    One of the original 26 declared fragrance allergens, and now capped by concentration as well. The labelling threshold is unchanged: it must be named on the pack above 0.001% in leave-on products and 0.01% in rinse-off products. After the SCCS reassessed citral's sensitisation endpoint in 2024 (SCCS/1666/24), Regulation (EU) 2026/909, in force since 18 May 2026, replaced Annex III entry 70 with a table of maximum concentrations by product type. A leave-on mask falls under the leave-on skin row at 0.15%; a wash-off mask falls under the skin rinse-off row at 1.2%. Products that do not comply may not be placed on the EU market from 1 January 2027, nor made available from 1 July 2028, so masks on sale today are unaffected.

    Regulation (EC) No 1223/2009, Annex III entry 70 (replaced by Regulation (EU) 2026/909) · source ↗

  • Citronellol
    Depends on youFragrance· in 20 of our masks

    One of the original 26 declared fragrance allergens. Must be named on the pack above 0.001% in leave-on products and 0.01% in rinse-off products. No maximum concentration is set.

    Regulation (EC) No 1223/2009, Annex III entry 86 · source ↗

  • Citrus Aurantium Bergamia (Bergamot) Fruit Oil

    Bergamot oil

    Worth knowingEssential oil· in 5 of our masks

    Two separate rules apply. Furocoumarins are prohibited under Annex II entry 358 except for the normal content of the natural essences used, and must be below 1 mg/kg in sun protection and bronzing products. Separately, Regulation (EU) 2023/1545 added Citrus Aurantium Bergamia Peel Oil as Annex III entry 352, so it must be declared as a fragrance allergen above 0.001% in leave-on and 0.01% in rinse-off products.

    Regulation (EC) No 1223/2009, Annex II entry 358 (furocoumarines) and Annex III entry 352 (inserted by Regulation (EU) 2023/1545) · source ↗

  • Citrus Aurantium Dulcis (Orange) Peel Oil

    Sweet orange oil

    Depends on youEssential oil· in 3 of our masks

    Added to the declared fragrance-allergen list by Regulation (EU) 2023/1545 as Annex III entry 351, which covers Citrus Aurantium Dulcis Peel Oil, Citrus Sinensis Peel Oil and Citrus Aurantium Amara Peel Oil. Must be named on the pack above 0.001% in leave-on products and 0.01% in rinse-off products.

    Regulation (EC) No 1223/2009, Annex III entry 351, as inserted by Regulation (EU) 2023/1545 · source ↗

  • Citrus Medica Limonum (Lemon) Peel Oil

    Lemon peel oil

    Worth knowingEssential oil· in 7 of our masks

    Two rules apply. Furocoumarins are prohibited under Annex II entry 358 except for the normal content of the natural essences used, and must be below 1 mg/kg in sun protection and bronzing products. Separately, Regulation (EU) 2023/1545 added Citrus Limon Peel Oil as Annex III entry 353, requiring it to be declared as a fragrance allergen above 0.001% in leave-on and 0.01% in rinse-off products.

    Regulation (EC) No 1223/2009, Annex II entry 358 and Annex III entry 353 (inserted by Regulation (EU) 2023/1545) · source ↗

  • Coumarin
    Depends on youFragrance· in 2 of our masks

    One of the original 26 declared fragrance allergens. Must be named on the pack above 0.001% in leave-on products and 0.01% in rinse-off products. No maximum concentration is set for cosmetic use.

    Regulation (EC) No 1223/2009, Annex III entry 77 · source ↗

  • Eucalyptus Globulus Oil

    Eucalyptus oil

    Depends on youEssential oil· in 4 of our masks

    Added to the declared fragrance-allergen list by Regulation (EU) 2023/1545 as Annex III entry 355, covering Eucalyptus Globulus Leaf Oil and Eucalyptus Globulus Leaf/Twig Oil. Must be named on the pack above 0.001% in leave-on products and 0.01% in rinse-off products.

    Regulation (EC) No 1223/2009, Annex III entry 355, as inserted by Regulation (EU) 2023/1545 · source ↗

  • Eugenol
    Worth knowingFragrance· in 2 of our masks

    One of the original 26 declared fragrance allergens. Must be named on the pack above 0.001% in leave-on products and 0.01% in rinse-off products. Regulation (EU) 2023/1545 separately added Eugenyl Acetate (Annex III entry 368) and Eugenia Caryophyllus (clove) oils (entry 356) to the labelling list.

    Regulation (EC) No 1223/2009, Annex III entry 71 · source ↗

  • Geraniol
    Worth knowingFragrance· in 20 of our masks

    One of the original 26 declared fragrance allergens. Must be named on the pack above 0.001% in leave-on products and 0.01% in rinse-off products. No maximum concentration is set.

    Regulation (EC) No 1223/2009, Annex III entry 78 · source ↗

  • Hexyl Cinnamal
    Depends on youFragrance· in 12 of our masks

    One of the original 26 declared fragrance allergens. Must be named on the pack above 0.001% in leave-on products and 0.01% in rinse-off products. No maximum concentration is set.

    Regulation (EC) No 1223/2009, Annex III entry 87 · source ↗

  • Lavandula Angustifolia (Lavender) Oil

    Lavender oil

    Depends on youEssential oil· in 7 of our masks

    Regulation (EU) 2023/1545 added lavender oil to the declared fragrance-allergen list as Annex III entry 360, covering Lavandula Angustifolia Oil and Lavandula Hybrida Oil/Extract. It must be named on the pack above 0.001% in leave-on products and 0.01% in rinse-off products. Non-compliant products could be placed on the EU market until 31 July 2026 and sold from existing stock until 31 July 2028.

    Regulation (EC) No 1223/2009, Annex III entry 360, as inserted by Regulation (EU) 2023/1545 · source ↗

  • Limonene

    Citrus terpene

    Worth knowingFragrance· in 38 of our masks

    One of the original 26 declared fragrance allergens. It must be named in the ingredient list when it exceeds 0.001% in a leave-on product or 0.01% in a rinse-off product. There is no maximum permitted concentration.

    Regulation (EC) No 1223/2009, Annex III entry 88 · source ↗

  • Linalool
    Worth knowingFragrance· in 44 of our masks

    One of the original 26 declared fragrance allergens. Must be named on the pack above 0.001% in leave-on products and 0.01% in rinse-off products. No maximum concentration is set.

    Regulation (EC) No 1223/2009, Annex III entry 84 · source ↗

  • Linalyl Acetate
    Depends on youFragrance· in 11 of our masks

    Added to the declared fragrance-allergen list by Regulation (EU) 2023/1545 as Annex III entry 337. Must be named on the pack above 0.001% in leave-on products and 0.01% in rinse-off products. Non-compliant products could be placed on the EU market until 31 July 2026 and sold from existing stock until 31 July 2028.

    Regulation (EC) No 1223/2009, Annex III entry 337, as inserted by Regulation (EU) 2023/1545 · source ↗

  • Menthol

    Menthol

    Depends on youFragrance· in 4 of our masks

    Regulation (EU) 2023/1545 added menthol to the declared fragrance-allergen list as Annex III entry 338, covering dl-, l- and d-menthol. It must be named on the pack above 0.001% in leave-on products and 0.01% in rinse-off products. There is no maximum permitted concentration. Non-compliant products could be placed on the market until 31 July 2026 and sold from stock until 31 July 2028.

    Regulation (EC) No 1223/2009, Annex III entry 338, as inserted by Regulation (EU) 2023/1545 · source ↗

  • Parfum

    Fragrance

    Worth knowingFragrance· in 117 of our masks

    A fragrance blend may be declared collectively as "Parfum", but individual allergens on the Annex III list must be named once they exceed 0.001% in a leave-on product or 0.01% in a rinse-off product. Regulation (EU) 2023/1545 expanded that list from the original 26 substances to roughly 80, adding Annex III entries 327 to 371. Products that do not comply may no longer be placed on the EU market after 31 July 2026, and stock already on shelves may only be sold until 31 July 2028.

    Regulation (EC) No 1223/2009, Article 19(1)(g) and Annex III entries 67-92; as amended by Regulation (EU) 2023/1545 (Annex III entries 327-371) · source ↗

  • Pelargonium Graveolens (Geranium) Oil

    Geranium oil

    Depends on youEssential oil· in 2 of our masks

    Regulation (EU) 2023/1545 added Pelargonium Graveolens Flower Oil to the declared fragrance-allergen list as Annex III entry 364. It must be named on the pack above 0.001% in leave-on products and 0.01% in rinse-off products, in addition to its citronellol and geraniol content being declared separately.

    Regulation (EC) No 1223/2009, Annex III entry 364, as inserted by Regulation (EU) 2023/1545 · source ↗

  • Santalum Album (Sandalwood) Oil

    Sandalwood oil

    Depends on youEssential oil· in 2 of our masks

    Added to the declared fragrance-allergen list by Regulation (EU) 2023/1545 as Annex III entry 367; the isolated constituent Santalol was added as entry 341. Must be named on the pack above 0.001% in leave-on products and 0.01% in rinse-off products.

    Regulation (EC) No 1223/2009, Annex III entry 367, as inserted by Regulation (EU) 2023/1545 · source ↗

  • Tetramethyl Acetyloctahydronaphthalenes

    OTNE

    Depends on youFragrance· in 10 of our masks

    Added to the declared fragrance-allergen list by Regulation (EU) 2023/1545 as Annex III entry 344. Must be named on the pack above 0.001% in leave-on products and 0.01% in rinse-off products. Non-compliant products could be placed on the EU market until 31 July 2026 and sold from existing stock until 31 July 2028.

    Regulation (EC) No 1223/2009, Annex III entry 344, as inserted by Regulation (EU) 2023/1545 · source ↗