Hydrated silica is a porous form of silicon dioxide used in skincare and toothpaste as a mild abrasive, absorbent, and viscosity-controlling agent. It helps with gentle exfoliation, oil absorption, and texture improvement in formulations.
| Reported effect | How often | Notes |
|---|---|---|
| Skin dryness | Uncommon | Its absorbent properties may reduce surface oils with frequent use. |
| Mild irritation or abrasion | Rare | Possible with coarse particles or aggressive scrubbing. |
| Allergic contact dermatitis | Very rare | Silica is generally considered inert and non-sensitizing. |
Frequencies reflect typical cosmetic use reported in the literature, not a guarantee for your skin.