Zinc OxideBenefits, how to use & safety
The broad-spectrum mineral shield.
What is Zinc Oxide?
Zinc oxide is a mineral that sits on the surface of skin and protects against both UVA and UVB rays. It is the only single sunscreen filter that covers the entire UV spectrum, and it is also soothing, making it a go-to for sensitive skin.
How it works
Zinc oxide particles reflect, scatter and absorb UV radiation. Modern micronised and non-nano formulas reduce the chalky white cast while still giving broad-spectrum protection.
Key benefits
- Broad-spectrum UVA and UVB protection
- Gentle on sensitive and reactive skin
- Photostable
- Suitable for children and during pregnancy
- Sun protection
- Sensitive skin
- Melasma
Best suited for: All skin types, especially sensitive, acne-prone and melasma-prone skin.
How to use it
Apply sunscreen generously, about a quarter teaspoon for the face, 15 minutes before sun exposure and reapply every two hours outdoors. Tinted mineral sunscreens help reduce white cast on deeper skin tones.
Pairs well & what to avoid
- Titanium dioxide
- Niacinamide
- Antioxidants like vitamin C
- Under-applying the product
- Aerosol or powder forms you could inhale
Safety & side effects
Zinc oxide is considered very safe and non-irritating. Avoid inhaling spray or powder forms. Mineral sunscreens are generally recommended in pregnancy.
Frequently asked
Does zinc oxide leave a white cast?
It can. Tinted or micronised formulas reduce it significantly.
Is zinc oxide better than chemical filters?
Neither is universally better. Zinc is gentler and broad-spectrum, while chemical filters are lighter to wear.
Is zinc oxide safe for acne-prone skin?
Yes. It is non-irritating, and some research suggests it may calm inflammation.
Educational content only, not medical advice. Individual skin responds differently. Patch-test new actives, introduce one at a time, and consult a dermatologist for persistent skin concerns, pregnancy or breastfeeding questions, or any prescription treatment.
