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The replacement of old hairs by new hairs is slowed down so that the hair becomes sparse and the scalp can be seen clearly through the hair. The causes can be numerous and include stress, restriction of the blood supply, a poor nervous system and hormonal influences. Androgenetic alopecia (female pattern baldness) in women is often linked to hormonal changes with the hair loss following events such as the menopause, childbirth or as a result of stopping or starting oral contraceptive pills. The hair loss is generally more uniform over the scalp than in the male counterpart, but also results from a complex chemical reaction when the enzyme 5-alpha-reductase converts the testosterone in the system into DHT or dihydro-testosterone. The hair follicles are genetically predisposed to be over sensitive to the DHT and become smaller and smaller with time, leading to the eventual hair loss.But they usually have an unpleasant smell, and chemicals which can damage your skin if you leave them on too long. You should try a amall amunt of depilatory in advance of a full treatment, to see if you develop an allergic reaction.Bringing Laser Hair Removal HomeProfessional hair removal clinics offer more expensive options, including laser hair removal or electrolysis. And many people prefer that their hair removal be done in the privacy of their own homes. To cater to them, do-it-yourself home laser hair removal equipment is now available. Is home laser hair removal safe and effective, and is it right for youHome laser hair removal is done with a smaller version of the portable lasers used in hair removal clinics. These portable machines apply pulses of laser energy to unwanted hair follicles and stop them from growing hair.