Stearoxy Dimethicone
What is Stearoxy Dimethicone?
Stearoxy Dimethicone is a silicone-based polymer formed by reacting dimethicone with stearic acid, resulting in a hydrophobic ingredient that provides a smooth, velvety texture in skincare and cosmetic formulations. It functions primarily as an emollient, skin protectant, and conditioning agent, helping to soften skin, reduce friction, and improve product spreadability. Commonly found in moisturizers, primers, and hair care products, it forms a lightweight, non-greasy barrier that locks in moisture without clogging pores.
Roles in Formulation
This ingredient serves the following purposes in cosmetic formulations:
Emollient
Softens and smooths skin by filling in surface roughness and improving slip; can also help reduce moisture loss when paired with occlusives and film formers.
Skin protecting
Forms a barrier to protect skin from external irritants.
Emulsifying agent
Enables stable mixing of oil and water phases by forming an interfacial film, helping create lotions, creams, and cleansers with consistent texture.
Skin conditioning agent
Maintains skin softness, smoothness, and flexibility.
Viscosity controlling agent
Adjusts thickness to the desired level for stability and usability, improving dispensing, suspension, and texture across many formulation types.