Proline
Proline is a skin conditioning and hair conditioning ingredient. It’s in 101 products on Poliage, most often conditioner, serum and body lotion. Avoid lists on Poliage that include it: none.
Updated October 22, 2026
In plain English
Proline: used to make hair smoother and easier to comb.
What it does
Contains Proline: hair-conditioning
Function listed in CosIng
Contains Proline: skin-conditioning
Function listed in CosIng
Source: CosIng, the European Commission cosmetic ingredient database, ref 78685, accessed October 22, 2026.
Products that contain Proline
The Ordinary
The Ordinary Glycolic Acid 7% Toning Solution (Solução tonificante de ácido glicólico 7%)
Lists exfoliating acid
Tío Nacho
Tío Nacho Anti-Caida Engrosador
Lists fragrance, fragrance allergens, sulfates, parabens
PRAVANA
Treat Masque
Conditioner · Lists fragrance, fragrance allergens, parabens, silicones
Pacifica
Vegan Ceramide Barrier Face Cream
Moisturizer · None of Poliage’s flag groups listed
Tree Hut
Watermelon Whipped Body Butter
Body lotion · Lists fragrance, fragrance allergens, silicones
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