There are many factors that cause hair loss, which can be divided into congenital alopecia, traumatic alopecia, and hair cycle disorder types. Hair cycle disorder, also known as resting alopecia, is a diffuse hair loss caused by endocrine, which is mainly caused by factors such as hypopituitarism, hypothyroidism, diabetes or oral contraceptives, and certain chemicals may cause hair loss, such as chemotherapy, antidepressants, vitamin A overdose, etc. Generally speaking, in a person’s life 15-30 years old hair growth is the fastest, with the growth of age, the growth of hair gradually slowed down, into old age, with the aging of the skin, atrophy, the number of hair follicles gradually reduced, hair will gradually thin; but if a person in young and middle-aged stage hair loss significantly increased, this may be a pathology. If significant hair loss occurs and no clear cause can be found, professional advice from a doctor should be sought promptly, and the sooner appropriate treatment is sought, the more help will be given to the hair loss problem. Many people currently suffer from hair loss, some even to a serious degree. On the one hand, it is related to genetic factors, but work stress and irregular life are also important factors that lead to the early appearance and increased severity of hair loss. Therefore, to prevent hair loss, you have to change your habits. First of all, sleep should not be less than 7 hours a day, and it is best to go to sleep before 11 pm, otherwise it will affect the body’s neuroendocrine system and cause or aggravate the original hair loss. Hair dyeing and perming should be mastered with good frequency, not more than 2-3 times a year, both should have time interval. This is because the perm and hair dye will produce a certain degree of damage to the outermost layer of the hair hair small skin, resulting in the stripping of hair scales, defects, loss of hair components, so that the hair loses its luster, dryness and easy to break. In addition, the hot air from the hair dryer can damage the proteins in the hair shaft, leading to cavities in the hair and making it prone to breakage, which should also be avoided. Shampooing itself is not going to cause or aggravate hair loss. The frequency of shampooing should vary from person to person. People who live and work in a very clean environment and do not have much oil on their scalp can wash their hair once every 2-5 days, while people who have a dirty environment or have a lot of oil on their scalp can wash their hair once every 1-2 days, or even 1-2 times a day. It is important to note that the water temperature when washing hair should not be too high. Frequent combing will not promote hair growth, but rather, some incorrect combing ways to damage the hair. Some people comb their hair upside down in order to make it fluffy, which can cause damage to the hair scales, thus leading to hair breakage. Nylon combs and head brushes should be avoided because static electricity can bring bad stimulation to the hair and scalp, and the ideal is to use a wooden comb. In addition, try not to comb your hair when it is wet, because this is when the water content of the hair is high, the hair small skin is rougher, and the hair strands tend to tangle with each other, if forced combing will lead to hair breakage and damage to the hair. How to determine the onset of hair loss easily? Hair has a metabolic process, generally speaking, 70-100 hair loss per day, are within the normal range, hair loss is also affected by seasonal factors and emotional state, only within a few days found hair loss, there is no need to panic. If you lose more than 100 hairs each time, or if you continue to lose hair for more than two months, you need to go to a regular hospital dermatology department. It is generally believed that men are more prone to hair loss, but the actual female hair loss situation is not optimistic either. Because women also have androgens in their bodies, but its onset is later than that of men, mostly around menopause, and to a lesser extent. However, today, a significant number of young women experience mild male pattern hair loss after puberty. Generally, hair loss also occurs after childbirth, mostly one month after delivery. Save the hair thinning method of the book The thinning hair should avoid long hair, the better method is to use the short and medium hair type, in the root of the hair with medium-sized hair volume for perming. The perm should not be too long, so that the hair forms a large bend, to the roots of the hair stand slightly. When doing the styling, focus on heating the roots so that the ends of the hair have a light and turbulent feel. Doing so can produce a visual effect of dense, naturally flowing hair. The following are three ways: a. Women with thin hair are best suited for short hair styles. The hair on top of the head should be cut into layers to cover the thinning hair and make the hair look fuller. If the hair is slender, must also use the method of cutting hair in layers; the top of the head in two layers, both sides of the hair is slightly longer, behind the hair is longer, hair feet flat cut to show the fullness. Second, the perm can make the hair look fuller, but many people with thin hair often can not find the ideal hair care products, the only way is to use a handful of hair as a test to see how much time is needed to perm the best effect. The perm is not a straight line, it is best to be a Z-shaped line, so as not to dry hair to reveal the division of the unsightly. Three, blow-drying hair is best to hang forward, the hair blowing away from the scalp, so that the hair appears to have weight. If you don’t blow dry, don’t comb your hair immediately after shampooing to avoid wet hair clinging to your scalp. You should use your hands to scratch upward on your head, or use your hands to rub the top of your head in a rotating manner to make your hair look fluffy, and then comb it after it has dried. If you have a “splitter”, it is better to use a blow dryer to blow your hair, because the wind will not be concentrated in one point, and your hair will look more natural.