C11-15 Pareth-7

C11-15 Pareth-7 is a synthetic surfactant and emulsifier derived from pareth compounds. It belongs to a class of ingredients designed to blend oil-soluble and water-soluble components, allowing formulators to create stable, homogeneous textures in skincare products.In cosmetic formulations, this ingredient performs a largely functional role rather than delivering direct skin benefits. It helps prevent creams, lotions and serums from separating into their oil and water layers during storage and use.

C11-15 Pareth-7 works by positioning itself at the boundary between oil and water molecules. One end of the molecule is attracted to oils whilst the other is attracted to water, allowing it to hold these normally incompatible ingredients together in a stable emulsion.This stabilising action is primarily cosmetic rather than therapeutic—it does not penetrate the skin or alter skin function, but rather ensures that the active ingredients in a product remain properly blended and effective.

C11-15 Pareth-7 is a background ingredient—you don't need to use products containing it differently from any other formulation. Simply follow the application instructions provided by the skincare brand. Since it serves a stabilising function, its presence or absence won't significantly alter how you apply a product or how often you use it.

C11-15 Pareth-7 is generally well-tolerated and has a long history of safe use in cosmetics. It is approved for use in the EU, US and other major markets.