Reef-Safe Sunscreen On Maui: What’s Legal, Ingredients To Avoid, And Best Mineral Brands

Aloha! Choosing reef-safe sunscreen is a smart way to protect your skin from the sun. It also does something vital for our oceans! It helps protect the beautiful coral reefs and the marine life they support. As more people learn about the harmful effects of some sunscreens, the demand for safer options is growing.

If you love the ocean, let that passion extend to your sunscreen choice! We touched on this in our Eco-Friendly Snorkeling blog, but here's a sunscreen guide with everything you need to know before your trip!

Is Reef-Safe Sunscreen Required On Maui?

Yes. Since October 1, 2022, Maui County has allowed only mineral sunscreen without a prescription. The county ordinance bans the sale, distribution, and use of non-mineral sunscreens unless they are prescribed by a licensed healthcare provider.

This is stricter than Hawaiʻi’s statewide sunscreen law, which, since January 1, 2021, has banned the sale, offer for sale, or distribution of sunscreens containing oxybenzone or octinoxate without a prescription.

What Sunscreen Ingredients Are Legal In Maui County?

On Maui, look for mineral sunscreen where only zinc oxide and/or titanium dioxide are listed as the active ingredients. Those are the mineral UV filters Maui County tells visitors to choose.

Maui County guidance also recommends choosing non-nanotized zinc oxide or titanium dioxide when possible. That recommendation is part of the county’s public guidance, but the easiest rule for visitors is still to check the active ingredients first.

What Does Reef-Safe Actually Mean?

“Reef-safe,” “reef-friendly,” and similar labels are not regulated standards. They can be helpful hints, but they aren't enough on their own. The only reliable way to shop for Maui is to read the active ingredients panel.

If the active ingredients are zinc oxide or titanium dioxide, you’re looking at a mineral sunscreen. If they aren't, put it back.

Ingredients To Avoid In Maui

The easiest Maui rule is simple: avoid any sunscreen that doesn't use zinc oxide or titanium dioxide as its active ingredients.

Common non-mineral ingredients travelers may already recognize include oxybenzone and octinoxate, which are restricted under Hawaiʻi’s statewide law.

What Else Should You Look For In A Mineral Sunscreen?

On Maui, the first thing to check is the active ingredients. Choose mineral sunscreen with zinc oxide and/or titanium dioxide, and do not rely on “reef-safe” or “reef-friendly” marketing claims alone.

After that, look for a broad-spectrum sunscreen with SPF 30+ so you get protection from both UVA and UVB rays. For snorkeling, swimming, and long beach days, water resistance matters too. Sunscreens labeled water-resistant are tested for either 40 or 80 minutes, so check the label and reapply as directed.

No sunscreen is waterproof, and sunscreen should not be your only line of defense. Maui County also recommends wearing shade and sun-protective clothing, such as hats, rash guards, and long sleeves, whenever possible.

Best Mineral Sunscreens For Maui

Below are mineral sunscreen options that fit Maui County’s ingredient rules. For snorkeling and long beach days, look for broad-spectrum SPF 30+ and water resistance, and reapply as directed on the label.

Reef-Safe Sunscreen On Maui Snorkeling Tours

On our Maui Snorkeling Tours, we provide Project Reef mineral sunscreen for all guests who need it. Project Reef’s SPF 50 sunscreen uses non-nano zinc oxide as its active ingredient and is water-resistant for up to 80 minutes.

We still recommend using a rash guard, hat, and shade whenever possible, since no sunscreen is completely waterproof and sun-protective clothing is an important first line of defense.

Final Thoughts on Reef Safe Sunscreen

For Maui, sunscreen shopping is simpler than it sounds: choose mineral sunscreen, check for zinc oxide and/or titanium dioxide, and don’t rely on “reef-safe” marketing alone. Pair sunscreen with shade and sun-protective clothing, and you’ll be making a better choice for both your skin and the ocean.