Isobutyroyl C10-40 Hydroxyacid C10-40 Isoalkyl Esters

Isobutyroyl C10-40 Hydroxyacid C10-40 Isoalkyl Esters is a synthetic ester derived from fatty acids and hydroxy acids. It functions primarily as a skin conditioning agent, working to improve the texture and feel of skincare formulations.This ingredient is designed to create a smooth, lightweight film on the skin's surface without leaving a heavy or occlusive residue. It's commonly used in moisturisers and serums where a refined finish is desired.

This ester works by forming a thin, permeable layer on the skin's surface. Unlike occlusive ingredients that seal moisture in, this ingredient conditions the outer layer of skin, helping to improve its tactile smoothness and reducing the appearance of rough or textured areas.The lightweight nature of the ester means it absorbs readily without leaving a greasy or sticky feel, making it suitable for formulations aimed at all skin types.

This ingredient is typically incorporated into moisturisers and serums by manufacturers, so you will not apply it directly. Use the product containing this ester as directed—usually morning and evening or as part of your regular skincare routine. It works well in layered routines and can be used alongside other actives.

Generally well-tolerated in cosmetic formulations. Those with sensitivity to esters or fragrance may wish to patch-test products containing this ingredient first.