On average, a person loses between 50 and 100 hairs per day as part of the natural hair renewal cycle. The "pull test" is an easy technique for assessing hair loss. Approximately 60 hairs are grasped between the thumb and the index and middle fingers. The hairs are then gently but firmly pulled. A negative test (six or fewer hairs obtained) indicates normal shedding, whereas a positive test (more than six hairs obtained) indicates a process of active hair shedding.
There are many factors that can contribute to hair loss in women, including genetics, hormonal changes, medical conditions, and certain medications. Nutritional deficiencies can also play a role in hair loss. Some chemical ingredients in hair care products, such as shampoos, can be harmful and cause breakage or increased hair loss. Anyone who notices an increase in how much hair they wash out in the shower may wish to stop using the product and opt for a gentler formula. If the increase is sharp, it may be best to see a doctor or dermatologist.
