Sodium Stearate – Glossar

Short definition

Sodium stearate is a sodium salt of stearic acid and is used in cosmetics primarily as a surfactant and emulsifier. Sodium stearate provides cleansing, foaming, and stable product structures.

What is sodium stearate?

Sodium stearate is the sodium salt of stearic acid, a saturated fatty acid, and chemically belongs to the anionic surfactants. Sodium stearate is produced by the saponification of vegetable or animal fats and is a key ingredient in traditional soaps. As a cleansing agent, sodium stearate helps remove dirt and excess skin oil.

In cosmetics, sodium stearate functions not only as a cleansing agent but also as an emulsifier and stabilizer. It helps to bind oil and water phases and gives solid products such as soaps, deodorant sticks, and shaving soaps their typical texture. In the INCI list, the ingredient appears as sodium stearate. Due to its cleansing and foam-stabilizing properties, sodium stearate is a widely used raw material in personal care products.

Frequently Asked Questions (FAQ)

What effect does sodium stearate have in soap?

Sodium stearate ensures cleaning, lathering and the firm structure of soaps.

Is sodium stearate harmful to the skin?

Sodium stearate is considered safe in typical concentrations, but can have a drying effect on sensitive skin.

Is sodium stearate of plant origin?

Sodium stearate can be obtained from both vegetable and animal fats.

Why is sodium stearate included in deodorant sticks?

The ingredient stabilizes the solid form and also has a mild cleansing effect.

Is sodium stearate a surfactant?

Yes, sodium stearate is an anionic surfactant with a cleansing effect.