Back to Ingredient Dictionary

OCTADECANE

Description

Octadecane is a long-chain hydrocarbon compound found in various natural oils and widely used in skincare formulations. This colorless, odorless substance is an alkane with the molecular formula C18H38, consisting of 18 carbon atoms arranged in a straight chain. In skincare products, octadecane functions primarily as an emollient and texture enhancer.

The ingredient's lightweight, non-greasy texture makes it an excellent choice for moisturizers and facial oils, particularly for those with normal to oily skin types. Octadecane forms a protective barrier on the skin's surface, helping to reduce transepidermal water loss and maintain hydration levels. Its occlusive properties contribute to smoother, softer skin texture.

Octadecane also serves as a stabilizing agent in formulations, improving the shelf life and consistency of products. It has a low comedogenic rating, making it suitable for acne-prone skin. The compound's ability to dissolve and carry other active ingredients enhances product efficacy. While not considered an active ingredient itself, octadecane plays a crucial role in improving the overall performance and sensory experience of skincare products. Its compatibility with various skin types and other cosmetic ingredients makes it a versatile component in modern skincare formulations.