Leucine
Primary Function
Humectant
Safety Verdict
Mostly Safe
Health Score
9/10
Eco Score
9/10
About Leucine
A branched-chain amino acid used in skincare to support protein synthesis and skin repair.
Formulation Role & Skin Benefits
Leucine is selected for formulations requiring improving skin hydration levels and moisture balance, delivering supporting smoother and plumper skin appearance.
Best suited for dry, dehydrated, and combination skin types. Typical formulation context: water-based serums, toners, moisturizers, and hydrating masks.
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