Popular Sunscreen MythsSunscreen is safe overall, but many people do not use it correctly. You need to apply a thick layer of sunscreen to the skin; it should take a little time to fully rub in. It’s also necessary to reapply sunscreen about once every hour or two. Below, you can see the truth behind a few common sunscreen myths that will further improve your knowledge of sun safety.
• Myth: Sunscreen can reduce your immune health. Because most sunscreens use nanoparticles to make physical blockers appear translucent on the skin, there is criticism that these nanoparticles can be absorbed through the skin and reduce your immune health. While the jury is still out on this issue, there is evidence that nanoparticles in sunscreen do not go beyond the stratum corneum, or outermost layer of skin. If you stick to lotions rather than spray-on sunscreens, you can be worry-free, since there is no risk of inhaling sunscreen or spraying areas like the eyes or mouth.
• Myth: Sunscreen does not lower your cancer risk. When sunscreen is used correctly, it significantly reduces cancer risk, but many people will spend more time in the sun because they are wearing sunscreen or fail to reapply sunscreen, which then drives the risk for skin cancer back up.
• Myth: A base tan provides protection from the sun. Because people with darker skin do have a lower risk for developing skin cancer, people assume that a “base tan” can have protective qualities. However, tanning itself is a type of skin damage, so you should not try to protect yourself by tanning.