What is the principle of laser hair removal?

There are many women who love beauty in life and often worry about excessive body hair. This is mainly caused by excessive secretion of male hormones in the body. Genetics is also a reason for excess body hair. There are many treatment options available today for removing body hair. Common hair removal cream treatments include laser treatments, etc. Among them, laser hair removal technology is relatively safe and effective, and is not prone to recurrence. So what is the principle of laser hair removal?

Principle of laser hair removal:

Laser hair removal is based on the principle of selective photothermal dynamics. By reasonably adjusting the laser wavelength, the light beam will penetrate the surface of the skin and be absorbed by the hair follicles. Through the selective absorption of laser energy, the hair follicles are destroyed and the hair loses its ability to regenerate, without damaging the surrounding tissues.

Laser hair removal advantages:

1. Laser hair removal causes little pain and can act on deep hair follicles in different parts of the body to remove hair thoroughly.

2. Laser can selectively act on skin tissue without damaging normal epidermis and tissue.

3. The treatment time is short and does not affect normal work and life.

Limitations of laser hair removal:

Laser hair removal is not perfect. Laser treatment is suitable for people with light skin and dark hair. The treatment range is locked on "dark pigments". If a person has dark skin, the laser will destroy the skin pigment at the beginning of treatment, causing white spots or dark spots. It will take several months to gradually recover after treatment. Before undergoing laser hair removal, you should choose a doctor with extensive experience in laser operations; after the operation, you should take good care of yourself and strictly protect yourself from the sun.

Adapt to the crowd

Laser hair removal is suitable for dark and light hair on all parts of the body, but is ineffective for white hair, excess black hair on all parts of the body (upper and lower limbs, legs, chest, abdomen, hairline, facial beard, bikini line), and for those who have not responded or failed to receive hair removal with electroacupuncture, drugs, electric tweezers, or other instruments.

Taboo group

1. People with allergies or scars;

2. People suffering from hepatitis, syphilis, or skin infections;

3. Blood diseases and coagulation disorders;

4. Women during menstruation;

5. Have a history of keloid;

6. History of using 13-cis retinoic acid within 6 months;

7. Those who have used other hair removal methods (such as waxing) within 6 weeks.

Preoperative precautions

1. For patients with darker skin types III to V, they should avoid sun exposure as much as possible before surgery, and it is best to use sunscreen for 4-6 weeks.

2. Those who are prone to pigmentation can also take hydroquinone drugs for prevention.

3. Prepare the skin of the treatment area before surgery and remove the hair with a razor.

4. Do not use depilatory cream, depilatory cream or other cosmetics before hair removal.

Postoperative precautions

1. After treatment or exposure to the sun, the skin will be irritated and damaged, which may cause pain, dryness, desquamation, allergies, or cause side effects such as pigmentation and scars. Pay attention to protection after surgery.

2. Avoid sun exposure within six months after treatment and take sun protection measures with saliva protection products.

3. The hair removal area may experience slight redness and swelling, skin sensitivity, and a hot or itchy feeling. Ice compresses can be used to relieve pain.

4. Be careful not to use hot water or scrub the hair removal area hard.