Pca
Pca is a humectant and moisturising ingredient. It’s in 76 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
PCA: used to hold water in the product and on skin.
What it does
Contains Pca: humectant
Function listed in CosIng
Contains Pca: moisturising
Function listed in CosIng
Source: CosIng, the European Commission cosmetic ingredient database, ref 77186, accessed October 22, 2026. Also listed as pidolic acid.
Products that contain Pca
The Ordinary
Multi-Peptide + HA Serum
Serum · None of Poliage’s flag groups listed
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
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
True Botanicals
Spirulina Cleansing Powder
Cleanser · Lists exfoliating acid, 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
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
The Ordinary
The Ordinary Glycolic Acid 7% Toning Solution (Solução tonificante de ácido glicólico 7%)
Lists exfoliating acid
Medik8
Total Moisture Daily Facial Cream
Moisturizer · Lists exfoliating acid, silicones
Related guides
How to read an ingredient list
What the ingredient list on a beauty product tells you, what the names mean, and what it leaves out, using FDA and EU labeling rules.
Does ingredient order show how much is in a product?
Ingredient lists run from most to least, but only down to 1%. Below that, any order is allowed. What the order shows and what it hides.
How do you patch test a new product?
What the AAD, FDA and DermNet say about testing a small area, the FDA hair dye skin test, in-office patch tests, and contact allergy basics.