Why do men grow beards and women don't?

Androgen and estrogen are secreted in both men and women. Normal women secrete more estrogen, but the opposite is true. If women have abnormal endocrine, that is, they secrete less estrogen, then androgens have the upper hand. It's positive. The same is true for men.

1, hair removal cream and hair removal dew hair removal principle: it is beneficial for the chemicals in it to dissolve the hair structure, thus achieving the purpose of hair removal. This method has no damage to hair follicles, so it doesn't last long and will grow back in about three days. Usage: When in use, apply the depilatory cream evenly on the part that needs depilation. After 5- 10 minutes, the hair becomes soft, and then it is scraped off with a scraper. Specially used to treat fine and soft body hair, which can quickly remove large areas of hair. Expert tip: suitable for people who are afraid of pain but their skin is not easily allergic. Patch test must be carried out before use. Clean the skin first to reduce irritation. The chemical composition of depilatory cream and depilatory dew is hydrophobic acetic acid (calcium), which is irritating to the skin. Frequent use or sensitive skin can cause redness, swelling, allergies and even rashes. Physical sensitive person should be used with caution.

2, beeswax hair removal hair removal principle: physical hair removal. Stick the body hair with sticky beeswax and tear it off. Usage: Apply the wax evenly to the skin, and the beeswax should be tightly attached to the skin so that all hairs can stick, then cover the gauze, pull the gauze covering the skin up and pull out the hairs one by one. Hair removal is usually carried out in beauty salons. Expert tip: it will cause pain when used, and chemically synthesized beeswax is easy to cause irritation to the skin; When it is removed, the body hair is easy to stay in a part of the pores, and the broken hair tail is easy to plunge into the hair follicle, causing folliculitis.

3, patch hair removal hair removal principle: similar to beeswax hair removal. Usage: according to the size of the part to be depilated, cut the patch and stick it on the needed part, and tear it off quickly. Remove it quickly, or it will hurt. Hair removal is usually carried out in beauty salons. Expert tip: it will cause pain when used, but the patch will not cause irritation to the skin like beeswax; When it is removed, the body hair is easy to stay in a part of the pores, and the broken hair tail is easy to plunge into the hair follicle, causing folliculitis.

4, shaver, electric shaver hair removal hair removal principle: physical hair removal. Adapt to people who are afraid of pain and have sensitive skin. Usage: Get into the habit of shaving every day, or you will grow a black moustache. Just like a man shaving, apply shaving cream to his skin before shaving. Expert tip: when shaving with a razor, the hair will grow longer and thicker. If the operation is not skilled, it is easy to scratch pores and damage delicate skin, resulting in redness and swelling.

5, clip-on hair removal hair removal principle: physical hair removal. Suitable for people with less hair who are not afraid of pain. Usage: Pull the hair out with a clip. Expert tip: pore cleanliness is not enough, and skin resistance decreases, leading to redness and infection. Use some antibiotics to avoid infection.

6. Photon hair removal hair removal principle: The hair follicle generates heat to selectively destroy the hair follicle by utilizing the absorption of light in a specific wave band by melanocytes in the hair follicle, and at the same time, the heat emitted can be conducted to the deep part of the hair follicle through the cross section of the hair shaft, so that the temperature of the hair follicle rises rapidly, thus achieving the hair removal effect and avoiding damage to surrounding tissues. Usage: The controllable pulsed light with appropriate energy is absorbed by the hair follicle tissue, which accurately destroys two important components in the hair follicle, namely the carina and the papilla. The application of broad-spectrum technology provides a soft and non-invasive therapy. Intense pulsed light with special wave band can penetrate the skin and reach the deep part of hair follicle, so that the temperature of hair follicle rises rapidly until it solidifies and dies, thus achieving the effect of permanent hair removal. Expert tip: Photonic hair removal technology has been certified to permanently remove growing hair after many treatments, and the specific number of treatments is related to many factors such as skin and hair type. Photon hair removal has a short time, daily activities and physical exercise after operation, no need for special care, quick, less pain, lasting effect and no damage to epidermis. Obviously superior to other traditional hair removal methods, it can effectively remove hair with different depths, colors and textures from any part of the body such as face, armpit, back, legs and bikini line.

7, electrotherapy hair removal hair removal principle: electricity destroys hair follicles, so that hair can never grow. Usage: Insert a very fine wire into the hair root, and destroy the hair follicle after electrifying. Each hair takes about 20 seconds. Anesthetic should be used before depilation. Expert tip: after the operation, 20%~30% of the hair may grow again because the hair follicle is not completely destroyed. In the process of hair removal, there will be a slight burning sensation on the skin surface, so there will be temporary small scars, so keep the wound dry. After about a week, the scab skin will automatically fall off. If it is a scar constitution, it may leave small spots all over the body. Suitable for people without scar constitution. This treatment is to go to the hospital.

8. Laser hair removal hair removal principle: Melanin in hair follicles will absorb the energy of laser, and destroy hair follicles through the exchange of generated heat energy, so that hair will stop growing. Suitable for people with light skin and fine black hair. Usage: operated by a professional doctor. Expert tip: laser treatment will cause damage to skin pigment and form spots; If more laser pulses or higher energy are used, scars may still be left on the skin; After treatment, there will be red fever, and the skin may become hard within two or three days, and traces of treatment may be left on the skin.

9. Drug depilation: In addition to the above-mentioned local depilation method of hair follicles or hair, there is another method to achieve the effect of inhibiting hair growth by taking orally drugs that inhibit androgen. There is a certain amount of androgen in women. When there is too much androgen, the hair will increase. But taking antiandrogen drugs must be carried out under the guidance of a doctor.