How many times do you need laser hair removal? Laser hair removal is not effective for life

Laser hair removal is a very common thing. In our daily life, many people will do laser hair removal. Laser hair removal is very effective and there is no pain. So how many times do you need laser hair removal? Laser hair removal is not effective for life.

How many times does laser hair removal take?

Many people think that laser hair removal only needs one treatment to achieve permanent hair removal, but this is not true. Hair is divided into three phases: growth phase, regression phase, and resting phase. The energy emitted by the laser instrument can only destroy the hair follicles in the growth phase, and has no obvious effect on the hair in the regression phase and resting phase. The laser can only work after these hairs enter the growth phase, so laser hair removal requires multiple treatments to achieve more significant results.

Because each person's situation is different, the number of laser hair removal treatments will also be different. The specific number of times is related to factors such as skin and hair type. Generally speaking, permanent laser hair removal can be completed in 3-5 times, but some people need more times.

Will laser hair removal cause it to grow back?

At present, laser or intense light therapy devices have the function of permanent hair removal, but it is not what most people think: after treatment, hair will not grow for life. The permanent here is not permanent in the true sense. The correct understanding of permanent hair removal should be that after laser treatment, hair will not grow again within a hair growth cycle.

It can be seen that laser hair removal will inhibit hair growth, but this is not effective for life, and basically only lasts about 10 years.

Laser Hair Removal Precautions

Before laser hair removal

1. People with a history of scars, current infection in the treatment area or a history of herpes simplex infection, pregnant women, etc. are not suitable for laser hair removal.

2. The skin of the treatment area must be prepared before the operation, and the hair must be completely shaved. 3. Pay attention to sun protection after laser hair removal.

After laser hair removal

1. Please avoid sun exposure 4-6 weeks before and after laser hair removal, and apply sunscreen lotion prescribed by your doctor to the affected area to reduce sun exposure.

2. After hair removal, the hair removal area may experience slight redness and swelling, skin sensitivity, and a hot or itchy feeling. If you feel pain, apply ice to relieve the pain.

3. Do not use hot water or scrub the hair removal area hard.

4. Keep local areas dry and try to reduce sweating, such as armpits, genitals, etc.

After laser hair removal, the skin is very fragile and cannot withstand exposure to the sun. If you are doing full body hair removal, you cannot take a bath or sauna. You cannot use too hot water to wash the skin after hair removal, let alone scrub it. The hair removal area should not be exposed to shower gel or other toiletries within a few days. In terms of diet, you should also be careful not to eat spicy and strongly irritating foods.

Principle of laser hair removal

Laser hair removal is based on the principle of selective photothermal dynamics. By reasonably adjusting the laser wavelength, energy, and pulse width, the laser can penetrate the surface of the skin and reach the hair follicles at the root of the hair. The light energy is absorbed and converted into heat energy that destroys the hair follicle tissue, thereby making the hair lose its ability to regenerate. At the same time, it does not damage the surrounding tissues and the pain is minimal.

The laser hair removal process is simple and quick, and generally no scars are left after treatment. The effect of laser hair removal is mainly because the process of hair follicle endothermic necrosis is irreversible, so laser hair removal can achieve permanent hair removal.