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Is Acetyl Hydroxyproline vegetarian?

Acetyl Hydroxyproline

Vegetarian Vegetarian
Vegan Vegan

Acetyl Hydroxyproline is the acetylated derivative of hydroxyproline, an amino acid, typically produced synthetically for use in skin-conditioning cosmetic formulations.

Also known as L-Proline, 1 Acetyl-4-Hydroxy-
INCI name Acetyl Hydroxyproline
CAS number 33996-33-7
EC number 251-780-6
CosIng ID 54137
Last reviewed 9 July 2026

An ingredient is considered vegetarian if it avoids components derived from killing an animal.

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