Also known as: Zinc Pyrrolidone Carboxylate
Zinc PCA is the zinc salt of pyrrolidone carboxylic acid. It regulates sebum production by inhibiting 5-alpha-reductase activity, reducing the conversion of testosterone to DHT in sebaceous glands. It also has antimicrobial properties against acne-causing bacteria. Used in serums and moisturisers targeting oily and acne-prone skin.
Comedogenicity ratings are based on the rabbit ear assay model. Individual skin responses vary. See our article on comedogenicity ratings for context.
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