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A recombinant keratinase enzyme derived from Bacillus licheniformis that breaks down keratin, often used in exfoliating products to smooth skin or in hair products to manage keratin structure.
Beneficial for
May aggravate
Safety summary
Generally considered safe for topical cosmetic use. As with any protein-based ingredient, a potential for allergic reaction exists, though rare.
1% line marker
This ingredient is commonly used as a marker to identify where ingredients drop below 1% concentration on the label.
For informational purposes only. This is not medical advice. Always patch test new products and consult a dermatologist for skin concerns.