Titanium dioxide is a mineral (physical) UV filter that reflects and scatters UV radiation, while silica acts as an absorbent, mattifying carrier that improves texture and oil control. Together they are common in mineral sunscreens and primers.
| Reported effect | How often | Notes |
|---|---|---|
| White cast on skin | Common | Titanium dioxide can leave a visible whitish film, especially on deeper skin tones. |
| Skin dryness or tightness | Uncommon | Silica's oil-absorbing properties may dry sensitive or dehydrated skin. |
| Mild irritation or stinging | Rare | Occasionally reported, often related to other formulation components rather than the minerals themselves. |
| Allergic contact dermatitis | Very rare | Both ingredients are considered low-allergenicity; true reactions are uncommon and typically tied to surface coatings. |
Frequencies reflect typical cosmetic use reported in the literature, not a guarantee for your skin.