ILIA vs Kosas: ingredient check
Updated 2026-10-15 · Based on 1750 screened products
Short answer: in our data, 33% of ILIA products (6 of 18) and 43% of Kosas products (6 of 14) list no watchlist ingredients, so Kosas has the higher share. This compares only what we screened. It is not a ranking of quality or performance, and coverage of each range may differ.
By category
| Category | ILIA clean / screened | Kosas clean / screened |
|---|---|---|
| Body Lotion | – | 1 / 1 |
| Cleansers | 1 / 1 | 2 / 2 |
| Deodorant | – | 1 / 1 |
| Face Creams | 2 / 5 | – |
| Foundations | 0 / 2 | 0 / 1 |
| Lip Care | 1 / 3 | 0 / 2 |
| Lipsticks | 0 / 3 | 0 / 3 |
| Mascaras | 2 / 2 | 1 / 1 |
| Serums | 0 / 1 | 1 / 1 |
| Sunscreen (Mineral Filters) | 0 / 1 | 0 / 2 |
Most common flags
ILIA: Titanium dioxide (12)
Kosas: Titanium dioxide (8)
Clean picks where both compete
Cleansers
ILIAThe Cleanse Soft Foaming CleanserCleansers✓ No watchlist ingredients foundSee ingredients →
Foundations
Lip Care
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Full brand pages: Is ILIA clean? · Is Kosas clean?
Method: IARC Monographs – List of Classifications; EU Cosmetics Regulation (EC) 1223/2009; our methodology.
Hazard is not risk. An IARC classification says whether a substance can cause cancer under some conditions (e.g. titanium dioxide is classified for inhaled powder), not that a cosmetic containing it is harmful at normal use. EU restrictions set use limits. This page is informational, not medical advice; talk to a dermatologist about your own skin.