Cholesteryl Chloride

Cholesteryl chloride is a synthetic lipid—a fat-like molecule derived from cholesterol. In skincare formulations, it functions as a skin conditioning agent, helping to maintain the skin's natural protective barrier.The skin's outermost layer (stratum corneum) contains a mixture of lipids including cholesterol, fatty acids, and ceramides. Cholesteryl chloride mimics one of these naturally occurring lipids, allowing it to integrate into the skin's structure and support barrier function.

The stratum corneum relies on a matrix of lipids to function as an effective barrier against water loss and external irritants. Cholesteryl chloride works by supplementing this lipid composition, helping to 'fill gaps' in the barrier structure and restoring optimal lipid ratios.When applied topically, this ingredient can penetrate the outer layers of skin and integrate into the existing lipid environment, effectively reinforcing the skin's natural defence mechanisms without altering pH or irritating the skin.

Cholesteryl chloride is typically found in moisturisers, serums, and barrier-repair products designed for dry or sensitive skin. Apply to clean, damp skin for optimal absorption, and layer with other hydrating or treatment products as needed. It works well in both morning and evening routines and does not require specific timing relative to other actives.

Cholesteryl chloride is generally well-tolerated and safe for topical use. It is not known to cause significant irritation, sensitisation, or photosensitivity in standard formulations.