Ingredient dictionary

Glyceryl Stearate

Also listed as: Glyceryl Monostearate, Glycerol Stearate

Glyceryl stearate is a waxy blend of glycerin and stearic acid, a fatty acid from plant or animal fat. It helps oil and water mix into smooth creams. It is on the label of 181 products in our library. Checked against our library November 6, 2026.

The catch: none for most people; check the full product list if your skin reacts easily.

What Glyceryl Stearate does

Emulsifies oil and water together
Thickens and firms up creams
Adds a soft, cushiony feel
Helps keep the formula stable

Glyceryl Stearate is made by joining glycerin, a simple, water-loving alcohol, with stearic acid, a fatty acid found in many plant and animal fats. The result is a mix of mono- and diesters, which are glycerin molecules with one or two stearic acid tails attached. Its water-loving glycerin head and fat-loving stearic acid tail let it bridge oil and water.

Formulators use it as an emulsifier, a helper that keeps oil and water from separating. It also acts as a mild thickener and gives creams a soft, smooth body. Because it is mild and waxy, it is common in sunscreens, lotions, cleansers and mascaras, where it helps the texture stay even over time.

Good for

Suits most skin types, especially people who want lotions and creams with a smooth, creamy texture.

Be careful if

Nothing in particular for most skin types.

Frequently asked questions

Is Glyceryl Stearate safe for sensitive skin?

Glyceryl Stearate is widely used and generally well tolerated. Like any ingredient, it can occasionally bother a very sensitive person. If your skin reacts easily, try a small patch test on your inner arm first.

What does Glyceryl Stearate do in sunscreen?

In sunscreen, it helps the oily and watery parts blend into an even, spreadable lotion. It also gives the formula a smooth, cushiony feel on the skin. It does not itself filter sunlight; the sunscreen filters do that job.