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Steareth-21

Description

Steareth-21 is a versatile emulsifying and solubilizing agent commonly used in cosmetic and personal care formulations. This synthetic ingredient is derived from ethoxylated stearyl alcohol, created through the reaction of stearyl alcohol with ethylene oxide. Its structure consists of a hydrophobic stearyl chain and a hydrophilic polyethylene glycol chain, giving it both oil-loving and water-loving properties.

In skincare products, Steareth-21 functions primarily as an emulsifier, helping to blend oil and water-based ingredients into stable, homogeneous mixtures. It also acts as a surfactant, reducing surface tension and enhancing the spread and absorption of formulations. The ingredient's mild nature makes it suitable for a wide range of skin types, including sensitive skin.

Steareth-21 is particularly effective in creating light, non-greasy textures in creams, lotions, and cleansers. It contributes to improved product stability and shelf-life while also enhancing the solubility of other ingredients. The compound's ability to form liquid crystals in emulsions can lead to enhanced moisturization effects on the skin.