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
MALIN+GOETZ The Bright Side Set The Bright Side Set MALIN+GOETZ 1
Maria Nila Gloss Coat 200ml Maria Nila 1
Maria Nila Structure Repair Bond Builder 150ml Maria Nila 1
Marine Hyaluronic Moisture Lock Serum The Ordinary 1
Mario Badescu Brightening Eye Serum - Eye Contour Serum 14ml Mario Badescu 1
Medik8 & Clean Skin Club 強效保濕及潔淨套裝 Medik8 1
Medik8 Day & Night Edit Kit Medik8 1
Medik8 Firm Favourites Duo Medik8 1
Medik8 Hydr8 B5 Intense 30ml Medik8 1
Medik8 Hydration Heroes Duo Medik8 1
Medik8 Moisturizer & Sunscreen Medik8 1
Medik8 Radiance Wrapped Duo Medik8 1
Medik8 全效保濕日用乳霜 Medik8 1
Meltdown Gel Cream for Acne-Prone Skin BLUME 1
Mise-en-scene Curling Essence 2X Natural Curl 230mL Mise-en-scene 1
Mise-en-scene Salon 10 Clinic Care Treatment (Extremely Damaged Hair/Damaged Hair) 300mL Double Pack Mise-en-scene 1
Mise-en-scene Salon 10 No Wash Ampoule Treatment Double Set (200ml*2) Mise-en-scene 1
Mise-en-scene Salon 10 Treatment 2 Options to Chooose Mise-en-scene 1
Moisturizing Argan Milk Leave-In Conditioner Kitsch 1
Moroccanoil Exclusive Hair Set Moroccanoil 1
Moroccanoil Frizz Shied Spray Moroccanoil 1
Multi-Peptide + Copper Peptides 1% Serum The Ordinary 1
Natural Moisturizing Factors + HA The Ordinary 1
Natural Moisturizing Factors + HA for Scalp The Ordinary 1
Necessaire The Neck Serum 50ml Necessaire 1
Neutrogena Hydro Boost Gel Cream Moisturiser for Dry Skin 50ml Neutrogena 1
Neutrogena® Hydro Boost Hyaluronic Acid Concentrated Serum Neutrogena 1
Neutrogena® Hydro Boost Night Cream Neutrogena 1
Neutrogena Hydro Boost Ultra Light Hydrating Serum with Hyaluronic Acid 30ml Neutrogena 1
Neutrogena® Hydro Boost Water Gel Cleanser Neutrogena 1
Neutrogena Hydro Boost Water Gel Cleanser Fragrance-Free with Hyaluronic Acid and Glycerin 200ml Neutrogena 1
Neutrogena® Hydro Boost Water Gel Moisturiser Neutrogena 1
No.4C Bond Maintenance Deep Clean Clarifying Shampoo - 8.5 oz Olaplex 1
No.5L Moisturize & Mend Leave-In Conditioner Olaplex 1
No7 Pro Artist Finishing Touch Fixing Spray 80ml No7 1
Nurture Hydrating Shampoo - 10.0 oz JVN 1
Nurture Intense Hydration Mask - 8.0 oz JVN 1
odiD Artist Hair Fixing Cara 8ml OdiD 1
OLAPLEX Maintenance and Repair Trio Olaplex 1
Olaplex No.4 Bond Maintenance® Shampoo 250ml Olaplex 1
Olaplex No. 5P Blonde Enhancer™ Toning Conditioner 250ml Olaplex 1
Olaplex 深層清潔保濕護髮套裝 Olaplex 1
Ole Henriksen After-Party Peptides AFTER-PARTY PEPTIDES SET 214.9g Ole Henriksen 1
Ole Henriksen Best of Ole Skincare Essentials with Vitamin C and Peptides Set Ole Henriksen 1
Ole Henriksen Glow Even Brighter Banana Bright+ Makeup Prep Set with Vitamin C and Hyaluronic Acid Ole Henriksen 1
Ole Henriksen Pout Preserve Hydrating Peptide Lip Treatment Cocoa Creme 12ml Ole Henriksen 1
Omorovicza Omoressence 精華液 Omorovicza 1
Oribe Bright Blonde Radiance & Repair Treatment Oribe 1
Oribe Hair Alchemy Strengthening Masque 150ml Oribe 1
Oribe Moisture & Control Straight Away Smoothing Blowout Cream 150ml Oribe 1
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