Ingredients in sunscreen having been doing damage to the coral reefs in Hawaii for years. These chemicals cause damage to the DNA of the coral, resulting in deformities, bleaching and sometimes even the death of the coral itself.
What's in the sunscreen that causes the damage?
Kaneohe Bay – coral bleaching. Photo credit: Shreya Yadav/Madin Lab/Hawaii Institute of Marine Biology
In January, 2021 SB2571 came into effect in the state of Hawaii. This bill banned the sale of any sunscreen that contained oxybenzone or octinoxate (unless prescribed by a healthcare provider). The Hawaii State Department of Land and Natural Resources had banned the use of these sunscreens a year earlier in Kealakekua Bay. This specifically targeted the tour boats that operate in the bay every day.
Oxybenzone and octinoxate are both FDA-approved compounds and are present in approximately 80% of all sunscreens.
Kaneohe Bay – coral bleaching. Photo credit: Shreya Yadav/Madin Lab/Hawaii Institute of Marine Biolog
Sunscreens that also contain petrolatum, also known as mineral oil, often take years to biodegrade and are also harmful to marine life.
Titanium Oxide does not easily biodegrade either – in fact it reacts to warm water by forming hydrogen peroxide which causes damage to marine life. However, reef-safe sunscreen that contain low concerntrations of the active ingredients zinc oxide and/or titanium oxide are considered safe.
Environmental Impacts
Coral reefs in the Hawaiian Islands are flooded with 6,000 tonnes of sunscreen every year.
It doesn’t take much to cause harm to the coral reef. Only a very small amount of oxybenzone (the equivalent of one drop of water into an area the size of 6.5 Olympic-sized swimming pools) can cause harm. Unfortunately, testing has revealed that some Hawaiian beaches show levels 10 times that amount.
Impact from sunscreen chemicals is only one factor among many causing ongoing damage to marine environments. Ocean acidification, water pollution and rising sea temperatures are all causing systemic problems to the ecosystem.
More changes ahead
In January 2023, a new law will ban the sale of sunscreen containing the ingredients avobenzone or octocrylene.
Maui has also passed a law which will come into effect October 1st, 2022 which will ban all non-mineral sunscreens.
What can you do to help?
Photo credit: Cindy Ellen Russel / Honolulu Star-Advertiser.
Make a concerted effort to buy reef-safe sunscreen. Look for the label on all certified sunscreens. Alternatively, try to reduce your reliance on sunscreens:
Stay out of the sun between 10am – 2pm
Use an umbrella
Wear a sunhat
Wear UV-protected sunglasses
Wear sun shirts and other UV protecting clothes where possible
The following are a list of some of the available reef-safe sunscreens in Hawaii:
Kokua Sun Care Hawaiian
SPF 50 Natural Zinc Sunscreen
Mama Kuleana Waterproof SPF 30 Reef-safe Sunscreen
Little Hands Hawaii SPF 35+ All-natural and Organic Sunscreen
Manda Organic SPF 50 Sun Paste
Raw Love SPF 35 All-natural Mineral Sunscreen
Thinksport SPF 50 Sunscreen
All Good SPF 30 Sport Sunscreen Lotion
Babo Botanicals SPF 30 Clear Zinc Lotion
Suntegrity Natural Mineral Sunscreen
Badger SPF 30 Unscented Sunscreen Cream
Raw Elements SPF 30 Certified Natural Sunscreen
Stream2Sea SPF 30 Mineral Sunblock
Loving Naturals Clear Body SPF 30+ All-natural Sunscreen
Banana Boat Simply Protect SPF 50+ Sunscreen (spray, not lotion)
Make sure you buy reef-safe sunscreen and do your part to reducing the human impact on the fragile coral reefs and the larger Hawaiian marine ecosystem.