Zinc Oxide
Also known as: ZnO, calamine (when combined with ferric oxide), CI 77947
Physical sunscreen that reflects and scatters UV rays; provides broad-spectrum UVA/UVB protection.
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Get the appWhat it does
Zinc oxide is an inorganic mineral that sits on the skin surface and deflects ultraviolet radiation away before it penetrates. It begins protecting immediately upon application and does not require time to absorb. It's photostable and remains effective under sun exposure without degradation.
Benefits
- Broad-spectrum UVA and UVB protection
- Gentle; suitable for sensitive and reactive skin
- Photostable; doesn't degrade in sunlight
- Non-comedogenic and well-tolerated
- Reduces inflammation and soothes irritated skin
Who it suits
- Sensitive skin
- Reactive/rosacea-prone skin
- Acne-prone skin
- Post-procedure/compromised barrier
- All skin types
How to use
Apply generously to all sun-exposed areas 15 minutes before sun exposure; reapply every 2 hours or after swimming/sweating. Use 1/4 teaspoon for face.
Pairs well with
Titanium dioxide (enhanced broad-spectrum coverage), Niacinamide (soothing), Hyaluronic acid (hydration), Vitamin E (antioxidant support)
Be careful pairing with
none notable
Safety & cautions
Zinc oxide can feel thick and leave a white cast at high concentrations; modern formulations use micronized particles to reduce this. Safe for regular use; not absorbed systemically in significant amounts.
Educational information, not medical advice. Concentration and formulation change how an ingredient behaves.