CheckVegan

Is Hydrolyzed Yeast Protein vegetarian?

Hydrolyzed Yeast Protein

Vegetarian Vegetarian
Vegan Vegan

Hydrolyzed Yeast Protein is a protein hydrolyzate obtained by acidic, alkaline, or enzymatic hydrolysis of Saccharomyces cerevisiae yeast, composed primarily of amino acids, peptides, and proteins. It is used as a skin- and hair-conditioning agent in cosmetics.

Also known as Yeast Protein Hydrolyzate
INCI name Hydrolyzed Yeast Protein
CAS number 100684-36-4
EC number 309-709-2
CosIng ID 76685
Last reviewed 4 July 2026

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

Classifications are made to the best of our knowledge based on available scientific and regulatory sources. We cannot guarantee the accuracy of every entry, errors in the sources we draw from can always occur. This tool also cannot account for cross-contamination, which depends entirely on individual suppliers and producers. If you believe a classification is incorrect, you can report an issue.

Report an issue