What it is
Caprylyl methicone is an alkyl-substituted silicone fluid, an octyl-modified trisiloxane, used mainly as an emollient and spreading agent. It has excellent spreadability and leaves a light, silky, smooth and non-greasy feel on the skin. A notable feature is its compatibility with both silicone and plant-based oils, which lets formulators combine those phases while keeping an elegant, non-tacky finish; this also helps carry and distribute UV filters across the skin.
Safety & warnings
As a lightweight silicone fluid, caprylyl methicone tends to evaporate from the skin rather than absorb deeply, contributing to a non-occlusive, lightweight feel that suits many skin types. Silicone emollients of this kind are generally well tolerated and are widely used in primers, serums, and sunscreens.
Origin & sourcing
It is a synthetic silicone produced as an alkyl-modified siloxane, with an octyl (caprylyl) side chain attached to a trisiloxane backbone. It is manufactured rather than derived from natural sources.
Questions everyone asks
What does caprylyl methicone do in sunscreen?
It is a light silicone emollient that improves spreadability and skin feel and helps distribute the UV filters evenly.
Is caprylyl methicone a silicone?
Yes. It is an alkyl-modified silicone, specifically an octyl-substituted trisiloxane.
Will it feel greasy?
It is designed to feel light and silky and to leave a non-greasy, non-tacky finish, and it tends to evaporate rather than sit heavily on skin.