
SODIUM STEARYL FUMARATE
Description
Sodium Stearyl Fumarate (SSF) is a versatile and widely used excipient in the pharmaceutical and cosmetic industries. This white, waxy powder is a salt of fumaric acid and stearyl alcohol, known for its excellent lubricating properties and stability across a range of pH levels.
In skincare formulations, SSF functions primarily as an emulsifier and texture enhancer. It helps create smooth, stable emulsions by reducing interfacial tension between oil and water phases. This property is particularly valuable in lotions, creams, and other topical products, where it contributes to a silky, non-greasy feel upon application.
SSF is non-irritating and well-tolerated by most skin types, making it suitable for use in sensitive skin formulations. Its low water solubility allows for controlled release of active ingredients in transdermal delivery systems. Additionally, SSF exhibits antistatic properties, which can be beneficial in powder-based cosmetic products.
From a formulation standpoint, SSF is compatible with a wide range of ingredients and remains stable under various storage conditions. Its ability to improve flowability and prevent caking in powders makes it an excellent choice for pressed powder products and dry shampoos.