LACTASE
Good
About LACTASE
An enzyme that breaks down lactose — used in cosmetics as a skin-softening exfoliant that digests dead skin proteins, similar to papain from papaya but from a dairy-free fermentation source.
Detailed Analysis
Lactase (EC 3.2.1.108) is the β-galactosidase enzyme produced through fermentation by Kluyveromyces lactis, a yeast species. It catalyzes the hydrolysis of lactose into glucose and galactose. In cosmetic formulations, proteolytic enzymes like lactase can degrade the protein matrix of dead corneal cells on the skin surface, providing a mild enzymatic exfoliation. The enzyme itself is a protein and carries a risk of provoking immune sensitization if applied to broken skin or inhaled, but is considered safe in rinse-off cosmetic formulations. K. lactis-derived enzymes have GRAS status for food use and no EU restrictions in cosmetics.
Skin Benefits
- ✓ Mild enzymatic exfoliation
- ✓ Skin-softening protein digestion
- ✓ Dairy-free enzyme source
Known Concerns
- ⚠ Potential skin sensitization on broken or compromised skin
- ⚠ Immune response possible with protein enzymes
- ⚠ Recommended primarily for rinse-off formulations
Safety Score
Good
Based on EU regulatory data, published safety research, and ingredient function analysis.
References
EU CosIng Database
European Commission cosmetic ingredient registry
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Download LuxSenseThis information is for educational purposes only and does not constitute medical advice. Always consult a healthcare professional for skin concerns or allergies.