Leucine

Leucine

AKA “L-leucine, (S)-Leucine, (S)-2-Amino-4-methylpentanoic acid, (2S)-2-amino-4-methylpentanoic acid, Leucin, (S)-2-Amino-4-methylvaleric acid, (S)-(+)-Leucine, L-alpha-Aminoisocaproic acid”

Synthetic

Ingredient Facts

Leucine

AKA: L-leucine, (S)-Leucine, (S)-2-Amino-4-methylpentanoic acid, (2S)-2-amino-4-methylpentanoic acid, (S)-2-Amino-4-methylvaleric acid, (S)-(+)-Leucine, L-alpha-Aminoisocaproic acid

Synthetic · Antistatic · EWG: 4

Synthetic

Skin Conditioner

Hair Care

Amino Acid

Synthetic

Clean

A naturally-derived amino acid that strengthens hair and smooths skin while reducing frizz and static for a polished finish.

Effective at 0.04%

Solubility 21500

Formula

C6H13NO2

Mol. Weight

131.17

CAS #

61-90-5

Form

Powder

State

White solid; [Merck Index] White powder; [Sigma-Aldrich MSDS]

See origin →

Functions

Antistatic

Hair Conditioning

A catch-all term for ingredients that improve how skin looks and feels — softer, smoother, more supple. The workhorse behind most moisturizers.

Skin Conditioning

A catch-all term for ingredients that improve how skin looks and feels — softer, smoother, more supple. The workhorse behind most moisturizers.

Locks in moisture

Traditional Use

An amino acid first isolated in 1820, part of the branched-chain amino acid group. Used in modern skincare for skin conditioning and as a humectant to improve skin hydration and appearance.