Superfine (micronized) zinc oxide is a mineral inorganic UV filter that provides broad-spectrum protection against UVA and UVB radiation by scattering, reflecting, and absorbing light. The reduced particle size improves cosmetic elegance by minimizing the characteristic white cast.
| Reported effect | How often | Notes |
|---|---|---|
White cast or residue on skin | Common | Less pronounced with superfine grades but still possible, especially on darker skin tones. |
Dryness or skin tightness | Uncommon | May occur depending on formulation base rather than zinc oxide itself. |
Contact irritation | Rare | Zinc oxide is generally well tolerated and considered low-irritant. |
Allergic contact dermatitis | Very rare | True allergy to zinc oxide is exceptionally uncommon. |
Frequencies reflect typical cosmetic use reported in the literature, not a guarantee for your skin.