PCA

CAS: 98-79-3 · EC: 202-700-3
Humectant
CosIng Ref: 77186
💡 For reference only. Does not constitute medical advice.
Description
Acts as a moisture-binding agent that helps draw water to the skin and maintain hydration levels in skincare formulations. Naturally occurs in human skin as part of the natural moisturizing factor, making it compatible with skin's own hydration mechanisms. While generally well-tolerated, some individuals may experience mild irritation with higher concentrations.
Synonyms
피씨에이 (ko) PCA (ja) L-2-Pyrrolidone-5-carboxylic acid pidolic acid
Properties
✗ Fragrance ✗ Preservative ✗ Colorant
Safety Rating
INTERNAL 5/10 · Moderate
Based on GHS hazard classification: H315=3, H318=5

Hazard Classification (GHS/CLP)

H-Code Description Category
H315 皮膚刺激 health
H318 嚴重眼損傷 health
H319 眼部刺激 health
H335 可能刺激呼吸道 health

Found in products

Total: 396
Product Brand Occurrences
Sulphate 4% Cleanser for Body and Hair The Ordinary 1
Summer Fridays Jet Lag Mask Summer Fridays 1
Summer Fridays Pink Dew™ Gel Cleanser - Gel Face Cleanser Summer Fridays 1
Summer Fridays The Jet Lag® Essentials Set Summer Fridays 1
Súperbomba Triple Repair Peptide Hair Mask - 8.5 oz Isima 1
Superfix Grip Primer Revolution Beauty 1
Super Strength+ PM Repair Sérum FEKKAI 1
Sweet Jasmine & Rose Body Moisturizer with Collagen Booster - 17.0 oz Hempz 1
The Clear Thinker Clarifying Shampoo Fenty Beauty 1
The Comeback Kid Instant Damage Repair Treatment Bond Builder Fenty Beauty 1
The Controlling Type Hair-Thickening Edge Control Gel Fenty Beauty 1
The Gelly Type Strong Hold Gel Fenty Beauty 1
The Glow Cycle Skincare Set OLEHENRIKSEN 1
The Homecurl Curl-Defining Cream Fenty Beauty 1
The Imposter Invisi-Boost Volumizing Dry Shampoo Powder Fenty Beauty 1
The Ordinary Age Support Bundle The 1
The Ordinary Beginner Bundle The 1
The Ordinary Hyaluronic Acid 2% + B5 Hydrating Serum - 60ml The Ordinary 1
The Ordinary Hyaluronic Acid + Natural Moisturizing Factors Bundle The 1
The Ordinary Marine Hyaluronics 30ml The Ordinary 1
The Ordinary Multi-Peptide + Hyaluronic Acid Serum for Aging Skin - 60ml The Ordinary 1
The Ordinary Natural Moisturizing Factors + Beta Glucan Lightweight Moisturiser for Oily Skin - 100ml The Ordinary 1
The Ordinary Natural Moisturizing Factors & Hyaluronic Acid Daily Moisturiser - 100ml The Ordinary 1
The Ordinary Niacinamide 10% & Zinc 1% Oil Control Serum - 60ml The Ordinary 1
The Ordinary Rice Lipids + Ectoin Microemulsion For Dry And Dehydrated Skin 120ml The Ordinary 1
The Ordinary The Bright Set The Ordinary 1
The Ordinary The Skin Support Set The Ordinary 1
The Protective Type Frizz-Smoothing Heat Protectant Styling Cream Fenty Beauty 1
The Water Boi Reparative Leave-In Detangling Conditioner Spray Fenty Beauty 1
Thickening & Volumizing Mousse Virtue 1
This Works My Wrinkles Extreme & Midnight Moisture 2 x 60ml This Works 1
T.L.C. Happi Scalp Scrub Drunk Elephant 1
Topicals Like Butter Hydrating Moisturizer 50ml Topicals 1
Treatment Mask for Fine to Medium Hair - 8.0 oz OUAI 1
Troubleless Clear Gel Cream 15ml 1+1 Double Pack Troubless 1
Trouble Maker Energy Level Plumping Setting Mist Trouble Maker 1
Troubless Spot Gel 15mL Troubless 1
Trust the Pros: Brighten & Firm Kit Drunk Elephant 1
Umberto Giannini Fuller Longer Thicker Root Lock Anti-Hair Fall Shampoo 250ml Umberto Giannini 1
UreaRepair 10% Urea Intensive Moisturising Lotion Eucerin 1
Vanilla Baby Hydra-Restore Body Lotion Truly 1
Vianek face care. Prebiotic & Glow Vitamin C Face Toner 300ml Vianek 1
VIRTUE® Overnight Scalp & Hair Elixir 50ml VIRTUE® 1
VIRTUE® Refresh Purifying Leave-in Conditioner 150ml VIRTUE® 1
VIRTUE® Restorative Treatment Mask VIRTUE® 1
VIRTUE® Volumizing Mousse 156g VIRTUE® 1
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