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Best sunscreen for Miami sun: mineral vs chemical
Miami's UV index is often forecast at 10–11+ — very high to extreme — from spring through summer. Here's how to pick and use sunscreen for it.
Updated October 2026

What to look for
- SPF 30 or higher, broad spectrum (AAD).
- Water resistant — labeled 40 or 80 minutes.
How to apply it
- About 1 ounce for the body.
- Apply about 15 minutes before going out.
- Reapply every 2 hours, and after swimming or sweating.
Mineral vs chemical
Mineral sunscreens use zinc oxide or titanium dioxide, which sit on the skin (#S09, #S11, #S12). Chemical sunscreens use filters that absorb UV and usually rub in clear — #S13 is a clear-finish option. Both work when you use enough and reapply; mineral formulas can leave a white cast, which tinted versions hide.
Dark spots and melasma
Visible light matters too. In a randomized trial of 61 patients, a tinted sunscreen that also blocks visible light (iron oxides) gave 15% greater improvement in melasma scores than a UV-only sunscreen at 8 weeks. For spots, a tinted mineral sunscreen like #S10 is the pick.
Don't skip your hands: anti-aging hands.
Products mentioned
S09Illustrative photo
S10Illustrative photoEltaMD UV Physical Tinted 100% Mineral Sunscreen SPF 41
Tinted mineral face sunscreen.
Check today's price
S11Illustrative photoBlue Lizard Sensitive Mineral Sunscreen SPF 50
Mineral sunscreen for sensitive skin.
Check today's price
S12Illustrative photoLa Roche-Posay Anthelios Mineral Light Fluid Sunscreen for Face
Lightweight mineral face sunscreen.
Check today's price
S13Illustrative photoOn sale today
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FAQ
What SPF do I need in Miami?
The AAD recommends SPF 30 or higher, broad spectrum and water resistant. Miami’s UV index is often forecast at 10–11+ from spring through summer.
How much sunscreen should I use?
About 1 ounce for the body, applied about 15 minutes before going out, and reapplied every 2 hours and after swimming or sweating (AAD).
Mineral or chemical sunscreen?
Mineral sunscreens use zinc oxide or titanium dioxide; chemical sunscreens use filters that absorb UV. Both protect when you apply enough and reapply.
Which sunscreen is best for dark spots or melasma?
In a randomized trial of 61 patients, a tinted sunscreen that also blocks visible light (iron oxides) gave 15% greater improvement in melasma scores than a UV-only sunscreen at 8 weeks.
Sources
- American Academy of Dermatology — how to apply sunscreen
- Castanedo-Cázares et al. 2014 — tinted sunscreen and melasma (PubMed 24313385)
Every number on this page comes from the sources below. Last updated October 2026.
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