Silica
Silica
- Role
- A fine powder that absorbs moisture and oils and makes the base less sticky.
- Catalog formulas
- 9
- Type
- Texture
- Verified
- 06.11.2026
What does this ingredient do in an antiperspirant?
According to CosIng, Silica is silicon dioxide with the functions absorbent, bulking, anticaking, opacifying and viscosity controlling.
Part of a system, not a label in isolation
In sticks and creams, silica supports a dry feel and keeps the base from feeling greasy or sticky. It does not reduce sweat production.
In 2025 CIR concluded that synthetically manufactured amorphous Silica and Hydrated Silica are safe in the present practices of use and concentration when formulated to be non-irritating.
It is usually not irritating to the skin. The CIR conclusion has a condition: the finished formula must be designed to be non-irritating.
Silica is not the same as Hydrated Silica (the hydrated form), and it is not a silicone such as Dimethicone: silicones are organic polymers, while silica is a mineral powder.
Products containing Silica
Links are based on the complete published INCI list for the exact product version.
Sources
The conclusions apply to the stated conditions and jurisdictions, not automatically to every concentration or product.
- EU CosIng: Silica Supports: function, substance identity
- CIR: synthetically manufactured amorphous Silica and Hydrated Silica (2025) Supports: safety assessment, conditions of use