Selfie Project face masks

The short read

• Calcium aluminum borosilicate and CI 77510 appear here and almost nowhere else in the catalogue. Lactobacillus ferment lysate and leuconostoc/radish root ferment filtrate are on every list, each at many times its catalogue share, and calcium sodium borosilicate follows them.

• Not one mask here is fragrance-free and every one prints parfum - but every one is also free of any essential oil, so the fragrance on this shelf is declared as the single word. A good share of them name an allergen as well.

• Every mask here is clear of the pregnancy flag, and most are free of a drying alcohol. A small number are recorded vegan.

• The lists run a shade above the catalogue's median, and the encyclopaedia reads further into them than it does across the catalogue.

• None of these prices is estimated - a sheet count on the box is what makes a per-use figure countable, and it is why the one price on this shelf is a counted one rather than an artefact of the arithmetic.

What these lists print that others do not

Not the most common ingredients - water is on nearly every list ever written and tells you nothing about who formulated the mask. These are the entries that appear far more often here than across the 219 masks as a whole, counted by encyclopaedia entry rather than by printed name. A shelf this size makes coincidences cheap, so nothing appears below that is on fewer than four of these lists.

• Calcium Aluminum Borosilicate4 of 6 here·4 of 219 overall
• Lactobacillus Ferment Lysate6 of 6 here·9 of 219 overall
• Leuconostoc/Radish Root Ferment Filtrate6 of 6 here·12 of 219 overall
• Tin Oxide4 of 6 here·8 of 219 overall
• Polysorbate 206 of 6 here·14 of 219 overall
• Silica4 of 6 here·14 of 219 overall
• CI 778914 of 6 here·24 of 219 overall
• Betaine6 of 6 here·49 of 219 overall

Names without a link have no encyclopaedia entry yet, so we make no claim about them beyond the count.

The 10 side by side

A brand needs 5 masks to carry a page, which is the floor at which a shelf says something a filter could not, and 10 of the 91 brands in the catalogue reach it. The other 81 are still in the catalogue and out of this table: 69 of them hold one or two masks, and 51 hold exactly one, and a median over one product is not a median. This is the one family whose whole partition will not go in a table, so a superlative here scoped to all brands is one a reader has to take on trust - the five that are so scoped are listed in lib/brands.ts for a reviewer to re-check.

What these labels print

Seven readings of the ingredient list, each counted the same way across this shelf and across the whole catalogue, so the second column is the baseline the first is worth reading against. Every one of them is a statement about what is printed on a pack - not about what a mask does, and not a verdict on any of them. The pregnancy flag in particular is a reason to read a list rather than a warning: it marks a mask carrying something the encyclopaedia says to check, which is a different thing from a mask being unsafe.

Vegan status is unrecorded for 5 of the 6 masks here, so that row counts only the packs where we found it stated - unrecorded is not the same as not vegan. How far into a list we can read is its own reading: the encyclopaedia has an entry for a median of 89.5% of each list here, against 82% across the catalogue. The rest is printed in names the site cannot yet decode, and an undecoded name is one we make no claim about either way - what we do not know.

All 6 Selfie Project masks

Cheapest use first. Every one is on sale in the EU and has a published ingredient list we could source and check.

• 

  Gesichtsmaske regulierend #CoolKoala

  27ingredients

  !5 ingredients we would look at twice

  €1.95 per use

• 

  Tuchmaske Calming #IceQueen

  27ingredients

  !3 ingredients we would look at twice

  €1.95 per use

• 

  Tuchmaske Cleansing #DragonFire

  22ingredients

  !3 ingredients we would look at twice

  €1.95 per use

• 

  Tuchmaske Moisturising #MermaidGlow

  30ingredients

  !3 ingredients we would look at twice

  €1.95 per use

• 

  Tuchmaske Nourishing #LittleOtter

  21ingredients

  !1 ingredient we would look at twice

  €1.95 per use

• 

  Tuchmaske Regenerating #FairyDust

  33ingredients

  !3 ingredients we would look at twice

  €1.95 per use