
Cosmia
1 active ingredient identified. We flag active ingredients based on common cosmetic-use and formulation patterns. This is informational only and not medical advice.
No pricing data available yet for Cosmia Masque extra doux
Exact science-based dupes appear first. When a strict dupe is not available yet, we still show the closest active-match alternatives from the same product category.

L'Oréal · drugstore
Shares the same primary conditioning agent (dipalmitoylethyl hydroxyethylmonium methosulfate) and cetearyl alcohol base, giving genuine textural and functional overlap, but adds niacinamide, mineral oil, and a heavy fragrance/allergen load not in the source.
No price

Unilever · drugstore
Uses a different quat (behentrimonium chloride) instead of the source's dipalmitoylethyl hydroxyethylmonium methosulfate, so the core conditioning chemistry differs despite similar cetearyl alcohol base and shared lactic acid.
No price

FOREVER LISS PROFESSIONAL · drugstore
Both are cationic hair masks with cetearyl/cetyl alcohol conditioning bases, but this one leans on collagen, amino acids, and silicones rather than the polyquaternium-37/dimethicone film system in the source, with only trace lactic acid in common.
No price

Garnier Fructis · drugstore
Built around stearamidopropyl dimethylamine and plant oils/butters rather than the source's dipalmitoylethyl hydroxyethylmonium methosulfate and polyquaternium film formers, so overlap is mainly the cetearyl alcohol base and minor lactic acid.
No price

Balmain · drugstore
This is a more advanced, amodimethicone/behenamidopropyl dimethylamine-based mask with retinyl palmitate and argan oil, sharing only cetearyl alcohol and trace lactic acid with the source's simpler quat/dimethicone system.
No price
We rank results with INCI-level analysis first, then fall back to the strongest active matches and closest alternatives so every product page still shows comparable options. Fallbacks stay within the same category as the source product, so cleansing balms only surface cleanser dupes instead of adjacent product types. Active Match % measures shared science-backed actives. Formula Similarity % measures total ingredient overlap when full INCI lists are available.