Silicone Quaternium-27

Silicone Quaternium-27 is a silicone-derived conditioning polymer used primarily in hair and personal care formulations. It belongs to a family of silicone compounds that have been safely used in cosmetic and pharmaceutical applications since the mid-20th century, where they are valued for their ability to coat and condition fibres without leaving a heavy residue.In skincare products, this ingredient functions as a conditioning agent, helping to improve the texture and tactile sensation of formulations. It contributes to the characteristic 'silky' feel many consumers associate with modern s…

Silicone Quaternium-27 works by forming a thin, protective layer over the skin's surface. Its quaternary (charged) structure allows it to bond with the skin whilst remaining lightweight, unlike heavier occlusive ingredients. This creates a smooth feel without the heaviness associated with traditional oils or waxes.The ingredient is particularly valued in formulations where a refined, non-greasy aesthetic is important, as it allows other active ingredients to be absorbed without leaving visible residue or build-up.

Silicone Quaternium-27 is typically incorporated into formulations at low concentrations, where it blends with other ingredients rather than being a primary active. It works well in lightweight serums, moisturisers and sunscreens where a non-greasy finish is desired. For combination or oily skin types, it can help deliver hydration without adding shine.

Silicones are generally well-tolerated in cosmetic formulations and have a long history of safe use. Individuals with known sensitivity to silicones should avoid products containing this ingredient; discontinue use if irritation occurs.