Ingredient dictionary

Disodium Stearoyl Glutamate

A mild salt made from a fatty acid and an amino acid, used as an emulsifier that helps oil and water blend into smooth, stable formulas. It is on the label of 6 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 Disodium Stearoyl Glutamate does

Keeps oil and water phases blended
Adds a smooth, creamy feel
Acts as a mild surfactant

Disodium Stearoyl Glutamate is made by attaching stearic acid, a common fatty acid, to glutamic acid, an amino acid. The result is neutralized with sodium, turning it into a water-friendly salt. Stearic acid can come from plant or animal fats, depending on the manufacturer.

Formulators use it mainly as an emulsifier, which keeps oil and water from separating. Because it is an amino acid-based surfactant, it is generally considered mild. In concealers and sunscreens it helps create a smooth, even texture. Its feel is soft and creamy.

Good for

Good for people who want a smooth, stable cream or sunscreen and prefer milder, amino acid-based ingredients.

Be careful if

Nothing in particular for most skin types.

Frequently asked questions

Is Disodium Stearoyl Glutamate safe for sensitive skin?

It is generally considered gentle, since it pairs a fatty acid with an amino acid and acts as a mild surfactant. Most people tolerate it well. Any ingredient can still bother a particular person, so patch testing a new product is a sensible step.

Is Disodium Stearoyl Glutamate vegan?

It depends on where the stearic acid comes from. That fatty acid can be plant-derived or animal-derived, and the manufacturer chooses the source. If you avoid animal ingredients, check the product's labeling or the maker's documentation before buying.