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Normal Hair Growth and Common Hair Loss
Normal Hair Growth Cycles Undisturbed, each terminal scalp hair usually grows continuously for about approximately three to five years. Then, the hair transitions into a resting state where the visible portion above the skin is shed. No hair grows from the follicle for 90 days. Once this time has passed, a new hair begins growing through the skin and continues for another three to five years at a rate of approximately 1/2 inch per month.