Isododecane is a synthetic aliphatic hydrocarbon with a branched structure that is commonly used in cosmetics, skincare, and body care products. It is primarily used as a solvent and emollient to help keep products soft and easy to apply. Isododecane is also an emollient, which means that it can provide the skin with protection from moisture loss, making it beneficial in formulations such as moisturizers, foundations, concealers, and conditioners. It is often used to provide the skin with a lightweight formulation that doesn’t leave the skin feeling greasy or heavy, making it a useful ingredient for hair products as well. Isododecane has another added benefit to formulations it is included in; it provides a matte finish to the product, which is particularly desirable in some lipstick formulations, foundations, and concealers. Isododecane is non-comedogenic, meaning that it doesn’t clog pores or contribute to the development of blemishes.
Isododecane is a relatively inert, colorless, odorless ingredient suitable for almost all types of skin, hair, sun, and lip care preparations. It is compatible and completely soluble with silicones, hydrocarbons, isoparaffin, and mineral spirits. Isododecane is highly volatile and is usually used in non-residual products. It has a low density and low viscosity and can be used as a replacement for oils in emulsions. It is a good ingredient for decorative cosmetics including mascaras, lipsticks, and eyeliners incorporated as a soft emollient, pigment-carrying agent, or plasticizer.
Studies on the safety profile of isododecane are limited, but it is generally considered safe for use in cosmetics. It is determined safe for use in cosmetics, subject to concentration or use limitations. Isododecane is a biodegradable product.
