The New York Times: Fashion & Style

A Change in Season and Regimen: In the winter, exfoliating may help ward off itch as well. Research has shown that in cold the cells of the upper epidermis (or corneocytes) accumulate, said Dr. Gil Yosipovitch, a professor of dermatology at Wake Forest University Baptist Medical Center in Winston-Salem, N.C. With slower cell turnover, water evaporates more easily from these upper layers of skin, and nearby nerve fibers send a warning message to the body that all is not well (otherwise known as itch).

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