Human Body

Skin, Hair, and Nails

Does human hair grow faster in summer or winter?

During the summertime, the rate of human hair growth increases by about 10 percent to 15 percent. This is because warm weather enhances blood circulation to the skin and scalp, which in turn nourishes hair cells and stimulates growth. In cold weather, when blood is needed to warm internal organs, circulation to the body surface slows and hair cells grow less quickly.


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