What it is
This ingredient is made by esterifying inulin, a polysaccharide from chicory or similar plants, with stearic acid. In mineral sunscreens and powders it is often used to surface-treat or disperse pigments such as titanium dioxide and zinc oxide, improving their distribution and the smoothness of the finish. It can also help stabilize emulsions and improve the feel of the formula.
Safety & warnings
Stearoyl inulin is generally considered well tolerated in leave-on and rinse-off products. It is not a known fragrance allergen and is not associated with notable comedogenicity at typical use levels.
Origin & sourcing
Derived from natural sources: inulin from plants such as chicory root combined with stearic acid (typically of vegetable origin).
Questions everyone asks
What is stearoyl inulin used for?
It is commonly used to disperse and coat mineral pigments and powders and to help stabilize emulsions, improving texture and finish.
Is stearoyl inulin plant-based?
Yes, it is made from inulin, a plant polysaccharide, combined with stearic acid that is typically of vegetable origin.