Cetyl alcohol is a fatty alcohol composed primarily of hexadecanol (C16), with minor amounts of other long-chain fatty alcohols. It is widely used in cosmetic and personal-care formulations as a viscosity-controlling and thickening agent. The material also acts as a co-emulsifier, enhancing emulsion stability while imparting increased opacity and a rich, stable foam to finished products. It provides gentle softening and smoothing benefits for both skin and hair, enhancing slip, ease of application, and overall sensory feel.
Cetyl alcohol is particularly effective in oil-in-water emulsions, where it supports long-term viscosity stability and texture optimization. It increases viscosity through crystalline network formation within the oil phase and at the oil–water interface, contributing to enhanced rheological stability and yield value. Its linear alkyl chain promotes lamellar phase organization, improving emulsion structure and resistance to phase separation without excessive waxiness. Compared to mixed fatty alcohols, cetyl alcohol provides more controlled, predictable thickening, resulting in improved emulsion stability.
This ingredient is a globally established, high-value ingredient in cosmetic and personal care products, valued for its versatility and pleasant skin properties.
