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Answer: All that water you're slugging down is great for your overall health, but unfortunately, you can't hydrate skin from the inside out, says Jessica Wu, M.D., a clinical instructor of dermatology at the University of Southern California. What you can do: "Keep dry skin under control by applying lotion right after you take a shower," she says. This traps the water left on your skin and slows evaporation, so dryness doesn't progress to itching, redness, cracking or peeling.
Originally published in Fitness magazine.