One of several emulsifiers in the 'steareth' group that helps oils and water mix, especially in highly acidic emulsions. It also offers a cleansing effect to the skin.
Functions
Cleansing,
Cleansing
Cleansing ingredients, also known as surfactants, clear dirt and buildup from the skin.
Cleansing,
Cleansing
Cleansing ingredients, also known as surfactants, clear dirt and buildup from the skin.
Emulsifying,
Emulsifying
Emulsifying – helps to mix water and oil together.
Emulsifying,
Emulsifying
Emulsifying – helps to mix water and oil together.
Solubilizing
Solubilizing
Solubilizing – helps ingredients dissolve.
Solubilizing
Solubilizing
Solubilizing – helps ingredients dissolve.
Origin
Synthetic,
Synthetic
All kinds of ingredients formulated or produced by a chemical process, or those that have a chemical modification in their structure.
Synthetic,
Synthetic
All kinds of ingredients formulated or produced by a chemical process, or those that have a chemical modification in their structure.
Animal
Animal
Ingredients derived from animals (including birds, fish, crustaceans, mollusks, and insects) or produced by animals (e.g. dairy- and egg-derived ingredients, bee products, silk, pearls, etc.)
Animal
Animal
Ingredients derived from animals (including birds, fish, crustaceans, mollusks, and insects) or produced by animals (e.g. dairy- and egg-derived ingredients, bee products, silk, pearls, etc.)
Steareth-21 is a waxy solid reaction product of a clear gas and stearyl alcohol. The number of the steareth depends on the number of ethylene oxide units used in a reaction process. Hence, it takes 21 units of ethylene oxide to produce steareth-21.
This ingredient offers a cleansing effect to the skin. It also exhibits emulsifying properties in a formula by helping oils and water mix, especially in highly acidic emulsions. Steareth-21 is sometimes used with steareth-2 to create more stable emulsions.
Science
1
Pasquali, R. C., Taurozzi, M. P., Sacco, N., & Bregni, C. (2008). Birefringent emulsions stabilized with steareth-2 and steareth-21. Lat. Am. J. Pharm, 6.
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