Mineral vs. Chemical Sunscreen in 2025: Reef-Safe Without Risking Skin Cancer
You can protect both the reef and your skin — a dermatologist explains how to pick a mineral sunscreen that still guards against melanoma, no trade-off required.
In a July 1, 2025 Brown University interview, dermatologist Dr. Elnaz Firoz recommended broad-spectrum mineral sunscreens — the only type allowed in Hawaii and Maui County — calling UV radiation 'a carcinogen, we know that to be 100% true' and noting that all skin cancer types are on the rise.
Dr. Elnaz Firoz of Brown University stated that UV radiation is 'a carcinogen, we know that to be 100% true,' and recommended broad-spectrum mineral sunscreens as a reef-compatible choice that still protects the skin.
Questions we get a lot
Is mineral sunscreen as protective against skin cancer as chemical?
A well-formulated broad-spectrum mineral sunscreen offers strong UVA/UVB protection, and a Brown University dermatologist recommended exactly that type in 2025, especially where reef-safe rules apply. The key is broad-spectrum coverage, adequate SPF, and applying and reapplying enough product. Both mineral and chemical sunscreens can prevent UV damage when used correctly.
Is UV radiation really a proven cause of skin cancer?
Yes. In the July 2025 Brown University interview, dermatologist Dr. Elnaz Firoz called UV radiation 'a carcinogen, we know that to be 100% true,' and noted that all skin cancer types are on the rise. That is why broad-spectrum sun protection is recommended regardless of which filter type you choose. Choosing a reef-safe mineral product does not require sacrificing that protection.
r/30PlusSkinCare: "If I switch to mineral sunscreen for reef rules, am I giving up skin-cancer protection compared to chemical?"