CheckVegan

Is Isopropyl PCA vegan?

Isopropyl PCA

Vegan Vegan
Vegetarian Vegetarian

Isopropyl PCA is the isopropyl ester of pyroglutamic acid (2-oxo-5-pyrrolidinecarboxylic acid), a synthetic moisturizing ingredient used in cosmetics.

Also known as Proline, 5-Oxo-, 1-Methylethyl Ester
INCI name Isopropyl PCA
CAS number 75917-92-9
CosIng ID 82521
Last reviewed 9 July 2026

An ingredient is considered vegan if it contains no animal-derived components at any point in its production.

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