Take care of your hair -- by paying less attention to it. Coloring your hair too often can damage it.
Limit heat exposure. Too much blow-drying or hot-curling can damage hair.
Limit chlorine exposure. Wear a bathing cap while swimming and shampoo immediately afterwards.
Hair is more fragile when wet. Avoid vigorous combing or brushing wet hair. Using a conditioner after shampooing can make grooming easier.
Avoid drinking too much alcohol and avoid using it on your hair. Hair care products that contain alcohol can make hair dry, brittle and prone to breakage.
Over-brushing damages hair -- 100 strokes a day is history.
Over-pulling also damages hair. Tight ponytails and braids are damaging.
Healthy hair is found on healthy people. Crash diets, illnesses, and even childbirth can cause hair loss.
Medications that can cause hair loss include Vitamin A, certain antidepressants, testosterone products, beta blockers, certain cholesterol-lowering agents, and chemotherapy.
Stopping birth control pills can contribute to hair loss.
Source: drdonnica.com