Stearamidopropyl Dimethylamine Lactate

Stearamidopropyl dimethylamine lactate is a quaternary ammonium compound derived from stearic acid (a fatty acid) combined with dimethylamine and lactic acid. It functions as a cationic conditioning agent, meaning it carries a positive charge that allows it to bind to hair fibres.Whilst primarily used in haircare formulations, this ingredient is occasionally found in scalp and body products where conditioning and antistatic benefits are desired. It works by coating the hair surface, which helps reduce friction and static electricity.

The ingredient's positive charge attracts to the negatively charged surface of hair fibres. This coating effect smooths the cuticle layer, reduces friction between hairs, and neutralises the electrical charge that causes static. The result is hair that feels softer, looks shinier, and is less prone to tangles.

This ingredient is typically found in rinse-off hair conditioners, leave-in treatments, and styling products. Apply to the mid-lengths and ends of damp hair, leave for a few minutes if used in a rinse-off formula, then rinse thoroughly. It is not designed to be left on skin for extended periods.

Generally well-tolerated in rinse-off formulations. As with most cationic conditioning agents, it should be rinsed thoroughly to avoid residue build-up on hair or scalp irritation in sensitive individuals.