Zinc Oxide

Also known as: ZnO, Mineral sunscreen

Generally SafeUV filterEWG: 1-2

The broadest-spectrum mineral UV filter — protects against UVA and UVB without hormone disruption.

How it works

Zinc oxide physically scatters and absorbs both UVA1 (340–400nm) and UVA2 (320–340nm) and UVB (280–320nm) radiation. Unlike chemical UV filters, it works immediately on application, does not need to be absorbed, and does not undergo photodegradation. It is also anti-inflammatory and is used in diaper rash creams for its skin-soothing properties.

Concentration note

10–25% in sunscreens. Higher concentrations provide more coverage but can leave white cast.

Best for

Sensitive skinRosaceaAcne-prone skinChildrenPregnancyReef-safe sunscreen

Commonly found in

Mineral sunscreensTinted SPF moisturizersBaby sunscreens

✅ Pairs well with

Titanium Dioxide Vitamin E Niacinamide

Safety & restrictions

No known significant safety concerns. Nano-particle zinc oxide is considered safe by major regulatory bodies — nanoparticles do not penetrate intact skin. Environmentally safer than chemical UV filters.

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For informational purposes only. Not medical advice. Consult a dermatologist for personalised guidance.