Back to Ingredient Dictionary

CYCLOHEPTASILOXANE

Description

Cycloheptasiloxane is a cyclic silicone compound widely used in cosmetic and personal care products. This clear, colorless liquid belongs to the family of cyclic siloxanes, specifically containing seven silicon-oxygen units in its ring structure. Its low molecular weight and unique chemical properties make it an excellent carrier and emollient in skincare formulations.

This ingredient exhibits a light, silky texture and rapid evaporation rate, allowing for easy spreading and quick absorption into the skin. Cycloheptasiloxane functions primarily as a conditioner and smoothing agent, imparting a soft, velvety feel to the skin without leaving a greasy residue. It also aids in improving the texture and spreadability of various cosmetic products.

In skincare formulations, cycloheptasiloxane acts as a volatile silicone, meaning it evaporates from the skin's surface after application. This property makes it useful in creating lightweight, non-occlusive formulas. It can help enhance the delivery of other active ingredients and improve the overall sensory experience of skincare products. However, its use has been subject to scrutiny due to potential environmental concerns, leading some formulators to seek alternative ingredients in recent years.