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Also-called-like-this: Pyrrolidone Carboxylic Acid

Official CosIng Information


PCA stands for Pyrrolidone Carboxylic Acid and though it might not sound like it, it is a thing that can be found naturally in our skin. In fact, after amino acids, it is the second biggest NMF component of the skin with 12% being PCA of the NMF composition of normal skin.  So similar to other NMFs, it's a skin goodie that helps the skin to hold onto water and stay nicely hydrated. 

Show me some proof

  • Lodén, Marie. "Role of topical emollients and moisturizers in the treatment of dry skin barrier disorders." American journal of clinical dermatology 4.11 (2003): 771-788.

Products with Pca

Swissvita Skin Regenerating Vital Essence Ausceuticals Peptide Moisturiser Brickell Men's Products Daily Strengthening Shampoo For Men The Ordinary Amino Acids + B5 La Roche-Posay Effaclar K [+] - Renovating Care For Oily Skin La Roche-Posay Hydraphase Intense Serum Shiseido Aqualabel Deep Clear Oil Cleansing Abnomaly Petrowhat? Bali Abnomaly Petrowhat? Baobab Abnomaly Petrowhat? Milk Abnomaly Petrowhat? Rio Lancôme Bienfait Aqua Vital Lotion Day Cream Living proof Intense Moisture Mask Nu Skin Ageloc® Lumispa™ Activating Cleanser - Oily OMIA Aloe Vera Cleansing Gel Comme Deux Serum Booster Pore Refining & Mattifying Darphin Cleansing Foam Gel Eva Naturals Peptide Complex Serum Gin Amber Beauty Natural Peptide Serum LANEIGE Essential Power Skin Refiner (Sensitive) Lancôme Hydra Zen Anti-Stress Glow Liquid Moisturizer Loopha Broadleaf Forest Body Wash Hello Nature Cannabis Oil Shampoo Zelens Provitamin D Fortifying Facial Mist Gia Naturals Eye Love OMIA Intimo Gel Ph 3,5 Zelens Z Balance Prebiotic & Probiotic Facial Mist Dermalogica Daily Microfoliant Dermalogica Daily Microfoliant Exfoliator Elemis Absolute Eye Serum Foxbrim Naturals Peptide Complex Serum Granado Espuma Regeneradora De Limpeza Dermalogica Daily Microfoliant Elemis Pro-Collagen Advanced Eye Treatment ISIS PHARMA Teen Derm A-Pure Lierac Radiance Toning Lotion Kat Burki Form Control Marine Collagen Gel Medik8 Hydr8 B5 Intense Omorovicza Omoressence Ouai Leave-In Conditioner Proactive+ Water Gel Hydrator Summer Fridays Super Amino Gel Cleanser Cel MD Microstem Shampoo Equal Beauty Super Serum Hydrantioxidant™ Faith in Nature Rose & Neroli Nourish & Repair Conditioner IOMA 1 Hydra Optimum Moisture Cream LANEIGE Watery Sun Cream Spf 50+ Pa++++ Neogence Xpermoist Deeply Moisturizing Mask Noreva Xerodiane OMIA Siero Viso Eco-Biologico Con Aloe Vera