humectant
Lysine HCl
Generally safe·Moderate evidence
An essential amino acid in salt form, used as a humectant to support skin hydration. Lysine is a recognized component of skin proteins and natural moisturizing factor, with established safe use in cosmetic formulations.
Products with Lysine HCl
References
Cosmetic information for general education, not medical advice. A verdict is a reading of the published evidence, never a guarantee for your skin: any ingredient can irritate someone, so patch test new products and see a professional if you react. Concern is graded on cited evidence, never on hazard-score lists. See how we score.