Don't put away the sunscreen after beach season ends, dermatologist Cheryl Karcher says. "In the wintertime, particularly with a clear blue sky, there are more UVA rays -- the kind that cause aging. I recommend an SPF of at least 30," she said. Karcher also recommends that patients bring along whatever skin care products they use to dermatologist appointments. "So often, women use the wrong products -- and way too many," she said.
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