Brand file

Kosas on the ingredient apps

Two of Kosas's best sellers, read on five public ingredient databases: every one got different verdicts from different databases.

SlipperSkin finding

Read on 21 and 23 October 2026, 2 of 2 Kosas products got different clean-or-flagged verdicts from EWG Skin Deep, INCIdecoder, SkinSAFE and Skincarisma; their mean EWG hazard score was 4 and mean Skincarisma score 97.

Part of our study of how ingredient apps disagree, now 88 products from 48 brands. Every figure below links to the page it was read from.

How do the ingredient apps rate Kosas?

They do not agree on any of them. EWG Skin Deep scores hazard from 1 to 10 (1 to 2 is its low band); INCIdecoder names the ingredients it rates "icky"; SkinSAFE rates freedom from common allergens (100 is its top); Skincarisma scores from EWG's ingredient ratings out of 100. 0 of 2 get SkinSAFE's top rating.

Kosas: the verdict grid2 products, four databases, read 21 and 23 October 2026

Values in the cells are each database's own figure. Blush is flagged, glass is clean, dashed is not listed.

What does each database say, product by product?

Kosas Revealer Concealer

Split verdict: 3 of 4 databases flag it. Fragrance-free on 2 of 5 databases. Read 23 October 2026.

EWG Skin Deep	3 of 10Fair data, updated May 2024	source
INCIdecoder	rates Arnica Montana Flower Extract, Rosmarinus Officinalis (Rosemary) Leaf Oil "icky"	source
SkinSAFE	91ingredients updated Sep 12, 2022	source
Skincarisma	100 of 100, "Excellent"	source
SkinSort	does not tag it fragrance-free	source

Kosas Wet Lip Oil Gloss

Split verdict: 3 of 4 databases flag it. Fragrance-free on 2 of 5 databases. Read 23 October 2026.

EWG Skin Deep	5 of 10 (its listings range 3 to 5)Fair data, updated August 2023	source
INCIdecoder	rates Citrus Aurantium Dulcis (Orange) Oil, Limonene, Linalool "icky"	source
SkinSAFE	91ingredients updated Jan 06, 2021	source
Skincarisma	94 of 100, "Excellent"	source
SkinSort	does not tag it fragrance-free	source

Where to buy

Find the Kosas products we checked on Amazon

Kosas Revealer ConcealerOne of the products this page checked on the ingredient databases; read the full rows above before you buy.3 of 4 databases flag itView on Amazon → Kosas Wet Lip Oil GlossOne of the products this page checked on the ingredient databases; read the full rows above before you buy.3 of 4 databases flag itView on Amazon →

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Where the law stands: FDA says cosmetic ingredients, other than colour additives, need no approval before sale (FDA's ingredient page); California bans a named list of intentionally added chemicals (Health and Safety Code section 108980); and the EU keeps its own prohibited and restricted annexes (Regulation 1223/2009 on EUR-Lex). Check any ingredient in our ingredient files.

More: the full study · which ingredient app answers which question · all 48 brand files

Other brand files: Neutrogena · Aquaphor · Olay · Tatcha