A topical substance formulated to protect the skin from the harmful effects of ultraviolet radiation by absorbing, reflecting or scattering ultraviolet rays.
Jill had Mark apply sunscreen to her back. "Bet these river guides get a lot of skin cancer", he said. He had a slappy, unpleasant way of doing it, and she struggled to keep her balance.2009, Elisabeth Hyde, In the Heart of the Canyon, page 55:
Chemical ingredients — such as avobenzone, oxybenzone and homosalate — absorb the UV rays. Both types of sunscreen can degrade or wash off over time, so it’s important to reapply every two hours, and more frequently if you’re swimming or sweating.2023 July 15, Dana G. Smith, “Why Sunscreen Is the Only Anti-Aging Product You Need”, in The New York Times, archived from the original on 13 Jun 2024:
1 more example
As for daytime sun protection, Dr. Bowe said mineral sunscreens made with zinc oxide may be gentler on sensitized skin than chemical formulas.2023 December 6, Jessica DeFino, “Too Many Products Can Stress Out Your Skin. Here’s How to Scale Back.”, in The New York Times, archived from the original on 06 Dec 2023: