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Sharp Health News

Making sunscreen safe for skin — and sea life

June 24, 2019

Making sunscreen safe for skin — and sea life

When you’re spending time outdoors, sunscreen is a must. It protects your skin from the sun’s harmful UV rays that can cause aging and skin cancer. But lately, some sunscreen ingredients are under fire for not being environmentally safe. This has some dermatologists concerned about a decline in sunscreen usage and a rise in skin cancer rates.

“We know that sun exposure is associated with skin cancer, and we’ve spent the last several decades educating the public about the preventive benefits of wearing sun protection,” says Dr. Mona Mofid, a board-certified dermatologist affiliated with Sharp Grossmont Hospital.

“More than 3 million Americans develop skin cancer every year, and many people don’t realize that one person dies every hour in our country from melanoma,” she says. “But if you protect your skin, it’s one of the most preventable cancers.”

New sunscreen rules coming soon
Currently in question are two ingredients: oxybenzone and octinoxate. Starting next year, Hawaii will be banning any sunscreen containing these ingredients because recent research indicates it is bleaching ocean coral reefs and causing irreparable damage, including eliminating the nutrients that sustain local marine life.

Starting in 2021, Key West, Florida, and the Island of Palau are also banning it for the same reason.

Other ways to protect your skin
While most people are aware of the benefits that sunscreen provides, Dr. Mofid points out that there are other options to protect your skin if you have environmental concerns.

“For example, you can wear protective clothing with UV protection, or slip on a lightweight long-sleeve shirt. Hats and sunglasses are great, as well as avoiding being in the sun during the hottest part of the day, usually between 10 am to 4 pm,” she says.

Choosing mineral-based sunscreen
When asked by patients which sunscreen is best for the environment, she advises them to read the label, looking for sunscreens that contain only zinc or titanium.

“Avoid sunscreens containing oxybenzone and octinoxate,” she says. “I like to say if you have a hard time spelling or pronouncing it — similar to food ingredients — you probably should choose an alternative. Zinc and titanium are natural ingredients that reflect the UV rays away from your skin.”

Most sunscreens protect skin from sun damage in one of two ways — either with a mineral barrier or a chemical one. Chemical-based ingredients (including oxybenzone and octinoxate) create a chemical reaction that denatures the harmful UV rays.

Mineral-based sunscreens (usually composed of titanium or zinc) work by sitting on top of the skin to deflect UV rays. They are generally safer and provide broad-spectrum protection against skin cancer and aging.

“You may have to make a switch, but there are many environmentally friendly choices that are reef- and marine-safe,” says Dr. Mofid.

What does this mean for San Diego?
Whether the sunscreen ban will catch on in California remains to be seen. San Diego attracts a high volume of visitors who come here for our 70 miles of beautiful coastline. And when tourists hit the water, the sunscreen they wear washes off into the ocean.

One study estimates that 14,000 tons of sunscreen enters the world’s oceans every year. And while San Diego’s ocean reefs are different that those found in Hawaii or the Mediterranean, they’re just as full of life. The West Coast is also home to kelp beds that make up a complex ecosystem supporting countless species.

Dr. Mofid says, “By going with an alternative sunscreen, you can do two great things: protect your skin and the ocean.”

To learn more about sun safety, watch Dr. Mofid’s video on 5 simple ways to keep your skin healthy.

For the news media: To talk with Dr. Mona Mofid about skin cancer for an upcoming story, contact Erica Carlson, senior public relations specialist, at erica.carlson@sharp.com.

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