Mineral vs chemical sunscreen: which is better?
Last updated September 3, 2026.
Both protect well - and the "mineral reflects, chemical absorbs" story is mostly wrong: zinc oxide and titanium dioxide work mainly by absorbing UV, same as the organic filters. The real differences are practical: mineral starts working immediately and suits sensitive skin but leaves a white cast; chemical is invisible on all skin tones and easier to wear daily - and the best sunscreen is the one you will apply generously. FDA rules apply equally: broad spectrum, reapplied every two hours and after swimming or sweating. Pymander's escalation routing is built and tested specifically for this class of decision; see the safety architecture working paper.
What to do
- Choose by wearability: the filter you will apply generously every day wins.
- Sensitive or post-procedure skin: mineral is the gentler default.
- Non-negotiables either way: broad spectrum, SPF 30+, a full shot-glass for the body, reapply every two hours.
- Get seen if: sunscreen stings, rashes, or breaks you out across brands - a dermatologist can pinpoint the reacting filter.
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