L-Isoleucine
What is L-Isoleucine?
L-Isoleucine is a branched-chain amino acid (BCAA) naturally occurring in proteins and used in skincare for its humectant and skin-repairing properties. It helps attract and retain moisture in the skin, supports collagen synthesis, and aids in wound healing by promoting cell regeneration. As an essential amino acid, it also contributes to protein building blocks vital for skin barrier function and overall tissue health.
Roles in Formulation
This ingredient serves the following purposes in cosmetic formulations:
Humectant
Attracts and holds water in the stratum corneum, boosting hydration and plumpness; commonly used in moisturizers, cleansers, and hair conditioners.
Skin conditioning agent
Maintains skin softness, smoothness, and flexibility.