Shea Butteramide/Castoramide DEA

Shea Butteramide/Castoramide DEA is a synthetic derivative created by combining shea butter and castor oil components with diethanolamine (DEA). It functions as a viscosity controlling agent, meaning it adjusts how thick or fluid a formulation is.This ingredient is primarily used in cosmetic chemistry to help stabilise and thicken formulations, ensuring consistent texture and application. It sits in the background of a product rather than delivering active skincare benefits directly.

Viscosity controlling agents work by modifying how molecules in a formula interact with one another. Shea Butteramide/Castoramide DEA is a surfactant-like molecule that can interact with both water and oil components, allowing formulators to achieve the desired thickness without relying solely on waxes or thickening polymers.The result is a product that feels appropriate on the skin—not too runny or too heavy—which can indirectly improve the experience of using skincare.

This is a formulation ingredient, so consumers do not need to think about how to use it—it is already optimised by the product manufacturer. Simply use the product as directed on the label. There is no need for additional application steps or precautions specific to this ingredient.

Generally well-tolerated in cosmetic formulations. Those with sensitivities to DEA compounds or oleochemical derivatives may wish to patch test first.