Sunscreens claim to be waterproof, though they've been told to stop.

As summer approaches and Americans head to the beaches for Memorial Day Weekend, people are stocking up on sunscreen to protect their skin. But finding a good sunscreen can be difficult. Walk down the aisle looking to buy sunscreen and you're bombarded with claims such as waterproof, sweat-proof, and protects against skin cancer. The problem, many of those claims are false. For example, some sunscreen advertise themselves as being waterproof and offering all-day protection. The FDA has labeled both these claims "misleading and false." According to David Andrews of the Environmental Working Group, there's no such thing as waterproof sunscreen at all. No matter what the sunscreen, he told us, "at some point it will rub off and dissolve in to the water."

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