Can a hair remover remove hair permanently?
June 17,2022
In recent years, the wind of hair removal equipment is also very strong. Friends who have already started hair removal equipment or are still waiting and watching will have a lot of doubts. Can hair removal equipment permanently remove hair?
The principle of hair growth
Hair consists of roots and shafts. Hair roots include hair follicles, dermal papillae, sebaceous glands, sweat glands, nerve endings, pili muscles, hair mother cells, and tiny blood vessels.
hair dry
Includes tips, mid-shafts, and roots. Hair follicles and dermal papillae are the manufacturing factories of hair, from which hair grows. The lower part of the hair follicle (stem and bulb), the center of hair growth, is mainly composed of mature hair mother cells with a small number of melanocytes. Hair mother cells, as the "engine" of hair growth, are directly affected by hair-inducing factors, and they continuously divide to produce new hair cells.
hair growth cycle The growth cycle is divided into three phases: growth phase (2-7 years), resting phase (3-4 weeks) and shedding phase (3-4 months). about 85%
Hair is in the growth phase and can last for about 7 years. Only 1% of the hair is in the telogen phase. After the growth phase, it enters the telogen phase. After (3-4) weeks, the hair no longer receives nutrients from the dermal papilla, and the hair roots begin to thin. 14% of the hairs are in the shedding period, which lasts for (3-4) months. The atrophied hairs move up to the opening of the sebaceous glands; during the shedding period, new hairs will start to grow in the hair follicles.
The principle of the hair removal device
The principle of the hair removal device is the "selective photothermal effect" of light, which acts on the hair follicles of the hair, destroys the hair mother cells of the hair follicles through heat conduction, inactivates the hair mother cells, and destroys the hair follicles so that the hair no longer grows.
The principle of the home optical hair removal device and the hospital's semiconductor laser hair removal device is the same as the "selective photothermal effect" of light.
The difference is as follows:
Can a hair remover remove hair permanently?
Long-lasting hair removal at home and laser hair removal do not equal hair loss.
1. As mentioned earlier, human hair has a growth cycle (growth phase, decline phase, and resting phase), and the hair removal device makes the hair's mother cells inactivate and play a role.
because The hair mother cells in the recession and telogen phase have been inactivated, so the hair removal device only works on the hair in the growth phase and does not work on the hair in the recession and telogen phase.
2. Hair mother cells will not be permanently inactivated, and their activity will recover after a period of time.
Therefore, hair removal devices cannot permanently remove hair. But if you insist on using it for a period of time to inactivate the hair mother cells of the hair in the growing phase, the hair removal effect will be better.