Understanding Reef-Safe Sunscreen in Hawaii and Its Importance for Your Skin and Coral Reefs
- Hawaiian Islands Dermatology Website
- May 18
- 3 min read
Hawaii’s sun is strong all year. The UV index often reaches 11 or higher. That means sunscreen is not just for beach days. It is a daily must for everyone living in or visiting Hawaii. Since January 2021, Hawaii Act 104 has banned the sale of sunscreens containing oxybenzone and octinoxate. This law aims to protect the coral reefs that surround the islands. Whether you are a local or a visitor, understanding reef-safe sunscreen is key to protecting your skin and Hawaii’s natural beauty.
What Hawaii Act 104 Actually Says
Hawaii Act 104 bans the sale of sunscreens with two chemicals: oxybenzone and octinoxate. These ingredients have been linked to coral reef damage. Coral reefs are vital to Hawaii’s ecosystem and economy. They provide habitat for marine life and protect shorelines from erosion.
The law applies statewide. That means all stores in Hawaii, including Kailua, Oahu, must stop selling sunscreens with these chemicals. This affects both locals and tourists. Visitors should plan to bring or buy reef-safe sunscreen while in Hawaii.
The goal is clear: protect coral reefs from harmful chemicals. At the same time, people still need effective sun protection. This law encourages the use of safer, mineral-based sunscreens.
What "Reef-Safe" Really Means
The term "reef-safe" is often used on sunscreen bottles. But it is not regulated by the government. That means some products labeled "reef-friendly" may still contain harmful ingredients.
True reef-safe sunscreens use mineral ingredients only. These are zinc oxide and titanium dioxide. They sit on top of the skin and reflect UV rays. They do not absorb into the skin or water, making them safer for coral reefs.
When choosing sunscreen in Hawaii, look for:
Mineral SPF only: zinc oxide and/or titanium dioxide
No oxybenzone or octinoxate listed on the label
Broad spectrum protection (against UVA and UVB rays)
Avoid sunscreens with unclear or unverified "reef-safe" claims. Always check the ingredient list yourself.
What Works for Hawaii’s UV
Hawaii’s sun is intense. To protect your skin, choose sunscreen with:
SPF 30 or higher
Broad spectrum protection
Water resistance (especially if swimming or sweating)
Apply sunscreen generously. Use about one ounce (a shot glass full) to cover the whole body. Reapply every two hours, or right after swimming or heavy sweating.
Remember, sunscreen alone is not enough. Wear hats, sunglasses, and protective clothing when possible. Seek shade during peak sun hours, usually 10 a.m. to 4 p.m.
Common Mistakes Locals Make
Even with good intentions, many people make sunscreen mistakes. These reduce protection and increase sun damage risk.
Using last year’s bottle: Sunscreen loses effectiveness over time. Check the expiration date. Replace old bottles.
Spray sunscreen under-applied: Sprays are easy but often not enough. Use enough spray or follow with lotion.
Missing spots: Commonly missed areas include ears, scalp part-line, tops of feet, and lips. These spots burn easily.
Relying on clouds: Clouds do not block UV rays. You can get sunburned on cloudy days. Always wear sunscreen.
Being mindful of these mistakes helps keep your skin safe in Hawaii’s strong sun.
After-Sun Care for Hawaii Skin
Even with careful sun protection, skin can get dry or irritated from sun, saltwater, and trade winds. After sun exposure, follow these steps:
Take a cool shower to rinse off salt and sweat
Apply aloe vera or a soothing moisturizer
Drink plenty of water to stay hydrated
Use a barrier-repair serum to help skin heal
Our pick: SolEivar Moisturizing Serum. This product is made in our Kailua clinic. It is designed to rebuild the skin barrier after sun, salt, and wind exposure. You can find it at hidermatology.com/category/all-products.
When to See a Provider
Regular skin checks are important for everyone in Hawaii. UV exposure increases the risk of skin cancer. If you notice new or changing spots on your skin, see a provider.
At Hawaiian Islands Dermatology in Kailua, Oahu, Doug Williams, MPAS, PA-C, offers annual skin cancer checks. For those on Maui, Big Island, Kauai, Molokai, or Lanai, telehealth visits are available. We accept Quest and Medicaid insurance for telehealth.
Visit hidermatology.com/skin-cancer for more information or hidermatology.com/telehealth to schedule a virtual visit.
A Local Note
Reef-safe sunscreen is more than a law. It is part of aloha for Hawaii’s environment. The coral reefs need protection to thrive for future generations. At the same time, your skin needs daily care against strong UV rays.
Remember, UV rays do not take a vacation. Whether you live here or are visiting, use reef-safe sunscreen every day. Protect your skin and the reefs that make Hawaii special.
Book your appointment with Doug Williams, MPAS, PA-C, at Hawaiian Islands Dermatology. Call (808) 263-3233 or visit Book Appointment Now. Our clinic is located at 1051 Keolu Dr Suite 107, Kailua, HI 96734.
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