The ingredient is a powder of porous, spherical, pure silica microbeads that act as sensory modifiers and help give that “nude” feeling. According to the company, it has a strong absorption capacity for oil and water, significantly reducing residual oiliness, greasiness and stickiness of formulations and leaving a matte finish. It’s reportedly best suited for mineral formulations.
The silica acts as a sunscreen agent and adds comfort and cosmetic purpose to SPF formulations. It also allows the formulation of robust sunscreens, showing no negative influence on the SPF.
For more information, see DSM.