Polymethylsilsesquioxane/Silica Crosspolymer ●
TL;DR. This ingredient is a texture powder and optical blurring agent that improves slip, soft-focus finish, and sebum control in creams, primers, sunscreens, and complexion products.
What does Polymethylsilsesquioxane/Silica Crosspolymer do in a cosmetic formula?
This ingredient is a texture powder and optical blurring agent that improves slip, soft-focus finish, and sebum control in creams, primers, sunscreens, and complexion products.
Is Polymethylsilsesquioxane/Silica Crosspolymer clean?
Clean-beauty frameworks often flag it because it belongs to a persistent synthetic polymer family, even though skin irritation is typically low. The main clean-standard friction is environmental profile, not acute skin tolerance.
Is Polymethylsilsesquioxane/Silica Crosspolymer sustainable?
This material is synthetically produced from mineral and organosilicon feedstocks rather than renewable agricultural sources. It is not readily biodegradable, and particulate persistence is the main sustainability concern.
Is Polymethylsilsesquioxane/Silica Crosspolymer COSMOS-approved?
It is not permitted under COSMOS-natural or COSMOS-organic because the synthetic crosslinked fraction does not fit the standard’s allowed raw-material categories. From a Green Chemistry view, its durability is useful in formulas but weak on renewability and end-of-life biodegradation.
How does Polymethylsilsesquioxane/Silica Crosspolymer work chemically?
The molecule is a crosslinked hybrid particulate network with hydrophobic methyl-substituted inorganic nodes, giving a smooth, powdery feel and light-scattering effect. It is generally inert across normal cosmetic pH ranges, used as an insoluble dispersed powder, and needs good wetting and milling for even suspension.
Last updated 2026-05-13