Dipentaerythrityl Tetrahydroxystearate/Tetraisostearate

Dipentaerythrityl tetrahydroxystearate/tetraisostearate is a synthetic ester derived from stearic acid (a naturally occurring fatty acid) and pentaerythritol, a polyol compound. It functions primarily as a viscosity controlling agent and skin conditioning ingredient in formulations.This ingredient helps stabilise product texture and spreadability whilst offering emollient properties to the skin. It is used sparingly in skincare formulations, appearing in roughly 0.2% of products on the market.

This ingredient works by coating the skin surface with a thin film of emollient material, which helps reduce moisture loss and creates a smooth feel. Its molecular structure allows it to integrate into formulations without dramatically altering their texture or absorption profile.

This ingredient is used by formulators rather than as a standalone product; you will encounter it as part of a complete skincare formulation. No specific usage instructions are needed beyond using the product as directed by the manufacturer. Patch testing before regular use is sensible if you have sensitive or reactive skin.

Generally considered safe and well-tolerated in cosmetic products. Some individuals with fungal acne or Malassezia sensitivity may wish to avoid products containing this ingredient, as fatty acid esters can potentially feed fungal growth in susceptible people.