R-BACILLUS LICHENIFORMIS KERATINASE is graded A (Safe) by Expert·ING, based on COSING regulatory data.

R-BACILLUS LICHENIFORMIS KERATINASE

Bacillus Licheniformis Keratinase

Safety grade: A

This is an enzyme derived from a naturally occurring bacterium that breaks down keratin, a tough protein found in skin and nails. It helps gently remove dead skin cells and strengthen nails by working at the surface.

This enzyme conditions skin and nails by breaking down excess keratin buildup, helping to soften rough areas, improve texture, and promote stronger, healthier-looking nails.

Graded using: COSING.

Last verified: May 26, 2026

Other Nail Conditioning ingredients

COMMIPHORA MYRRHA RESIN EXTRACT — Grade A
ECHINACEA ANGUSTIFOLIA ROOT EXTRACT — Grade A
VACCINIUM MYRTILLUS LEAF EXTRACT — Grade A
2-METHYLPROPANAL — Grade A**
4,4'-ISOPROPYLIDENEDIPHENYL/EPICHLOROHYDRIN COPOLYMER DIACRYLATE — Grade A
ACETALDEHYDE — Grade F**
ACRYLIC ACID — Grade A**
AMP-ISOSTEAROYL HYDROLYZED SILK — Grade B