At present, laser is the most common treatment for hair removal, and the most concerned issues are as follows.
1.What is laser hair removal?
The principle of laser hair removal is based on selective photothermal action, using a certain wavelength of laser light to reasonably adjust the pulse width and energy density, it will cross the skin surface to reach the root of the hair follicle, the light energy is absorbed and converted into heat energy to destroy the hair follicle tissue, so that the hair loses its ability to regenerate. Laser hair removal is a safe, fast and long-lasting hair removal method.
2.Will it be effective if you remove it once?
Laser hair removal usually requires several times to remove the hair cleanly. The reason for this is twofold: one is that most of the hair follicles are bundled together in a group of three, opening in the same pore, a hair in the pore is the hair growing out of one of the three hair follicles in the group below it, so a treatment can only destroy one of the hair follicles in a group; secondly, hair growth should go through the growth period, regression period, rest period, in the growth period of hair to do laser hair removal for 75% effective, regression period for 25%, rest period is almost invalid.
3.After hair removal, does it affect sweating?
Sweating mainly depends on small sweat glands, and the small sweat gland opening is not in the hair follicle. Laser hair removal destroys the hair follicles, but does not harm the sweat glands, so it does not affect human metabolism and sweating.
4.Can we achieve permanent hair removal effect?
After laser treatment, the average reduction is 20%~30% each time, generally speaking, the hair removal rate can reach 95% after several laser treatments. Of course, its efficacy is affected by many factors, and the current technology is not yet successful in permanently removing white hair and fine hairs.
5.Does laser hair removal have any harm to the skin?
Since the hair follicle has a lot of melanin, it can preferentially absorb a large amount of laser energy and eventually convert it into heat energy, which raises the temperature of the hair follicle to achieve the purpose of destroying the function of the hair follicle. In this process, because the skin does not absorb laser energy, or absorbs a very small amount of laser energy, so the skin itself will not have any damage when choosing the right energy parameters.
6.Will the hair get darker and darker?
After the laser treatment, the remaining hair will become finer and lighter in color. In contrast, the hair will gradually become thicker, harder and darker for those who use these methods for a long time, such as shaving, plucking, hair removal cream, wax paper hair removal, etc.
7.Is the effect of hair removal the same for all people and all parts?
The effect of hair removal depends on the number of treatments, the type of skin, the thickness and color of the hair and the treatment area. Usually, the lighter the skin color, the darker and thicker the hair is, the better the response and the better the hair removal effect.
8.What will be the reaction of the skin after hair removal treatment?
The ideal immediate reaction to hair removal is that the hair is carbonized or even vaporized, with no other obvious reaction. After a few minutes, red spots and papules appear around the hair follicles. The duration is mostly one to two days. Damaged hair follicles may be shed from the treated area within a week after the procedure, which is not a sign of hair regrowth.
9.What do I need to pay attention to when preparing for hair removal treatment?
Plucking, waxing and electrolytic hair removal should be avoided 6 weeks before laser treatment; patients who have recently taken photosensitive drugs and have a history of sun exposure are not suitable for immediate laser hair removal.
10.Can I sunbathe immediately after hair removal?
After hair removal, the skin surface is damaged by a certain degree of thermal damage and the protection function is reduced, and it is easy to be sensitive, so further thermal stimulation of the skin should be avoided, so it is not suitable for sunbathing immediately.
11.What should I pay attention to after hair removal surgery?
Ice packs are necessary immediately after surgery to reduce pain and edema. Avoid contact with hot water or direct sunlight on the treatment area within 48 hours after surgery, and avoid eating spicy, stimulating and fumigating food. You should not wear makeup for one week after treatment. Basic skin care is sufficient.