Consultation ＼ Liao Yi-Hua (Attending Physician, Department of Dermatology, National Taiwan University Hospital; Associate Professor, Department of Dermatology, National Taiwan University College of Medicine) Author ＼ Wu Si-Ying
Vivian has been obsessed with jogging for a year, and has been meeting her coworkers to run and workout on her days off from work or on vacation. As the weather gets hotter and hotter, the chances of wearing sports tank tops and shorts increase, Vivian feels that her armpit hair, hand and foot hair are too long and not very attractive, so she has tried various DIY hair removal methods, but she always found it laborious and time-consuming. The newest addition to the lineup is the newest addition to the lineup, the newest addition to the lineup, the newest addition to the lineup.
Laser hair removal utilizes a single wavelength of energy to treat the hair follicle. The standard model is the 755 nm (nanosecond) Alexandrite or Asterix laser, and there are also diode lasers with wavelengths of 800-810 nm, and neodymium Jacobian lasers with long pulses of 1064 nm.
Generally speaking, the longer the wavelength, the deeper the energy penetration, the deeper the hair follicles can be treated. However, the effect of destroying hair follicles also depends on whether the laser wavelength can be fully absorbed by the melanin of the hair. In addition to the different types of lasers, physicians also need to adjust the laser energy or pulse time according to the thickness of the patient's body hair, in order to achieve the best results in removing hair and avoiding skin side effects.
Pulsed light is good for armpit hair
Pulsed light is different from laser. Instead of a single wavelength, pulsed light is a spectrum of light ranging from 400 to 1200 nm. Compared to Alexandrite, pulsed light takes longer to heat up, and is suitable for coarser body hair, such as armpit hair and bikini line***.
As the hair follicle cells have several layers, the structure is quite big, after the pulse light heating, the melanin in the hair will absorb the heat energy, and then spread to the surrounding hair follicle cells; if you can destroy the hair follicle's stem cells, the effect of removing the hair will also be better.
Because laser and pulsed light use melanin to absorb energy to remove hair, it is difficult to remove white or blonde body hair without melanin.
Hair removal requires multiple sessions
Both laser and pulsed light can precisely destroy hair follicles, so hair removal is better than DIY hair removal, which is the same advantage. However, it's not possible to get rid of 100% of the hair, especially hair on the hands and feet, which has a faster metabolism, and even after multiple applications, the results are still only 70-80% effective.
Why can't we get rid of it all? Because the body hair growth cycle can be divided into the anagen phase, the degenerative phase, and the resting phase, only the hair in the anagen phase will be eliminated, so the public has to have the concept of multiple removals and mental preparation.
In general, after the first hair removal, the interval of about 4 to 6 weeks to do the second, *** for 4 to 6 times, the average is about 5 times, the price of each end depends on the provisions of the medical center. But if the underarms and bikini line parts, you can achieve more than 90% permanent hair removal effect; the rest of the sparse body hair, you can shave the knife and other auxiliary way to remove.
In addition, the physician will first understand the thickness of the patient's body hair to choose the treatment. If you're looking for a way to get rid of body hair, you'll want to go with a laser. If you're looking for a way to get rid of body hair, you'll want to go with a pulsed light.
Improper operation may have side effects
It is important to remind the public that although laser and pulsed light are not major surgeries, if the medical professional is not trained enough, and if the energy is not properly selected, there may be side effects.
Take the side effects of lasers for example, clinically there are patients who have been treated for skin pigmentation loss and have been left with white spots around their hair follicles like Bambi, or have been treated for hyperpigmentation and anti-blackness. Another paradoxical special case is that the application of energy is too light and *** hair follicle growth, resulting in the phenomenon of body hair growth more.
Compared to lasers, pulsed light is not a single wavelength, so if it is applied improperly, or if the patient's skin is more sensitive or darker, it may cause epidermal injury. In the clinic, there are patients who have burned blisters on their calf skin after pulsed light hair removal, and some people have pigmentation, which can lead to black, white, and even scarring.
Patients need to have a full discussion with their healthcare provider before the procedure to understand the precautions to be taken so that the results do not meet expectations. In addition, if you have a crabshank body, especially when dealing with areas of high skin tension such as chest hair, you may also develop crabshanks due to burns.
Be careful with your hair removal devices
These devices are a great way to get the most out of your hair, but they are also a great way to get the most out of your skin. Raise the alarm, it is recommended to go to a regular medical institution, and by a physician who has received specialized training to perform, at the same time, medical personnel can also be for the thickness and location of body hair, to determine the energy to be applied. The newest addition to the lineup is a new, more advanced version of the original, which is now available in a variety of languages.
Laser or pulsed light hair removal
A month before the hair removal treatment, the hair removal area should be protected from the sun, and should not be tanned or sunburned. Please do not remove hair at home before hair removal, the hair root must be preserved to absorb the laser or pulsed light energy.
When people arrive at the hospital, the medical staff will first remove the hair with a razor, then apply a topical *** cream, and wait for 30 minutes for the *** to work before starting the laser or pulse light.
Usually the time of operation depends on the part of about 10 to 60 minutes, because it is the destruction of the skin deeper parts of the hair follicles, the process of the affected part will feel a mild hot feeling or a rubber band playing the feeling. Some machines have a cooling system that releases cold air or cools the skin with a probe that can reduce pain and protect the epidermis.
After the treatment, an ice pack will be applied to the affected area, because laser or pulsed light hair removal will not produce wounds under normal conditions, and you can take a shower after going home, but the water temperature should not be too high, and pay attention to the hair removal area can not be hard to brush, or exfoliate the skin with scrubs and friction.
If the pores or surrounding skin are slightly red, apply an ice pack or moisturizing lotion with anti-inflammatory ingredients like aloe vera to remove the redness, and continue to protect yourself from the sun.
Recommended reading: Sexy wife must!
Q, I've heard that if you use a razor to shave your hair, the hair will grow more and more black, is that really true?
A, this is a very common saying, however, it is actually an illusion after using a razor to shave, because the new body hair will be confined to the epidermis, and it will look as if it is particularly thick and black. The newest addition to the lineup is the newest addition to the lineup, the newest addition to the lineup, the newest addition to the lineup, the newest addition to the lineup.
Q. If I destroy the hair follicle, will it affect my sweating?
A. No. Hair removal destroys the hair follicle. Hair removal destroys the hair follicle, while sweating is related to the sweat glands, which are located in different parts of the skin. But the sweat glands that produce the odor are located next to the hair follicles, and the secretions are discharged from the mouth of the follicles. If you use the latest microwave heating surgery to deal with sweaty armpits and odor in the past two years, you can destroy the sweat glands at the same time, and then remove the hair with microwave heat, which can be said to be "two birds with one stone".