A new sunblock that does not penetrate the skin

Researchers at Yale have developed a sunscreen made with bioadhesive nanoparticles that is not only waterproof, but does not penetrate the skin barrier, eliminating the health concerns associated with commercial sunscreens. While sunblocks are good at preventing sunburn and decreasing the risk of skin cancer from sun exposure, nanoparticles designed to reflect or absorb cancer-causing ultraviolet light, can go below the skin’s surface and enter the bloodstream. As a result, they pose possible...
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