Ingredient
Leucine
Low risk
FunctionAmino Acid
What it is — Leucine (INCI: Leucine) is an amino acid used as a conditioning ingredient for hair and skin.
What it does — It helps bind water and is commonly used to condition the surface and support the skin and hair's natural moisture balance.
Typical use — Found in conditioners, hair treatments, moisturizers and essences.
Who it suits / good to know — Broadly suitable across skin and hair types and easy to combine with other amino acids and humectants.
Safety — Graded low risk as a skin- and hair-familiar amino acid. This is general information, not medical advice.
Cross-reference
Found in these DHALIORA products
Found in 1 DHALIORA product
How grades are set — Risk reflects our own reading of publicly available safety data, an EWG-style reading shown at the worst-case grade we've assigned this ingredient across products. It isn't a third party's proprietary score, and it isn't medical advice. Always read the packaging and patch-test where indicated.
← Back to the ingredient glossary