Quick Answer: What chemical in sunscreen harms coral reefs?

What ingredients in sunscreen are bad for reefs?

Common sunscreen chemicals oxybenzone and octinoxate have been found to increase coral bleaching.

What chemicals in sunscreen are bad for the ocean?

Recent studies have found that sunscreen chemicals in many popular products actually hurt corals. The main chemical culprits are oxybenzone and octinoxate, which convert sunburn-causing UV rays into harmless heat on human skin.

How much oxybenzone is toxic to coral?

An oxybenzone concentration of around 400 ppt over several days is enough to induce coral bleaching in warm waters.

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