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 21, 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
Natural Moisturizing Factors + Beta Glucan
Moisturizer · None of Poliage’s flag groups listed
The Ordinary
Natural Moisturizing Factors + HA
None of Poliage’s flag groups listed
Olaplex
No. 8 Bond Intense Moisture Mask
Lists fragrance, fragrance allergens, drying alcohol, silicones
JVN
Nurture Hydrating Conditioner
Conditioner · Lists fragrance, fragrance allergens, essential oils
Olaplex
º7 SHINE SERUM OIL MIST
Hair styling · Lists fragrance, fragrance allergens, exfoliating acid, essential oils, silicones
Medicube
PDRN Wrapping Mask
Mask · Lists essential oils
Maelove
Peptide Squad Collagen Renewal Serum
Serum · Lists drying alcohol, silicones
R+Co
PRIMARY COLOR CONDITIONER
Conditioner · Lists fragrance, fragrance allergens, essential oils
R+Co
PRIMARY COLOR SHAMPOO
Shampoo · Lists fragrance, fragrance allergens, essential oils
Drunk Elephant
Protini Polypeptide Cream - Big
Moisturizer · Lists coconut derivatives
Drunk Elephant
Protini Polypeptide Firming Refillable Moisturizer
Moisturizer · Lists coconut derivatives
Drunk Elephant
Protini Powerpeptide Resurfacing Serum with Lactic Acid
Serum · Lists exfoliating acid, coconut derivatives
Andalou Naturals
Resurfacing Texture Refining Night Cream
Moisturizer · Lists fragrance, fragrance allergens, exfoliating acid, essential oils
Andalou Naturals
Resurfacing Triple Acid Exfoliating Toner
Toner · Lists fragrance, fragrance allergens, exfoliating acid, essential oils, coconut derivatives
The Ordinary
Rice Lipids + Ectoin Microemulsion
Moisturizer · None of Poliage’s flag groups listed
sirius groom shampoo
Lists fragrance, coconut derivatives
The Ordinary
Squalane + Amino Acids Lip Balm
Lip · Lists exfoliating acid
Biossance
Squalane + Growth Factor and Peptide Firming Moisturizer
Moisturizer · None of Poliage’s flag groups listed
Act+Acre
Stem Cell Thickening Foam™
Hair styling · Lists fragrance, fragrance allergens, essential oils
Kristin Ess
Strengthening Conditioner
Conditioner · Lists fragrance, drying alcohol, silicones, coconut derivatives
Kristin Ess
Strengthening Shampoo
Shampoo · Lists fragrance, silicones, coconut derivatives
Maybelline
Super Stay Lumi-Matte Foundation
Foundation · Lists drying alcohol, silicones
Drunk Elephant
T.L.C. Happi Scalp Scrub
Exfoliant · Lists exfoliating acid, salicylic acid, coconut derivatives
Naturium
The Multi-Vitamin Daily Nutrients Body Wash
Body wash · Lists essential oils, coconut derivatives
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