Laser Hair Removal

Laser Hair Removal

Laser Hair Removal (LHR) is a technique for removing unwanted hair using laser light pulses. These pulses assist in the destruction of hair follicles. Laser hair removal is widely used and conducted in clinics and at home, with a variety of advanced technological instruments. It shines intensely concentrated light into hair follicles, causing the pigment in the follicles to absorb the light and destroy it [1]. LHR is suitable for all skin types.

Unwanted hair is removed from the face, leg, chin, back, arm, underarm, bikini line, and other regions using lasers.

LHR has the following advantages:

1. Lasers can particularly target dark, coarse hair while causing no damage to the surrounding skin.

2. It is a quick procedure.

3. Patients who want permanent hair loss can benefit from recurrent LHR

LHR is renowned for causing long-term hair growth delays rather than permanent hair loss. Multiple laser hair removal sessions are required at first, followed by maintenance. People with pale complexion and dark hair benefit the most from laser hair removal.

Hair colour and skin type are two factors that influence successful and effective removal. Here, we use the fundamental idea of hair pigmentation, which should absorb light but not the skin\’s pigmentation.

Only the hair follicles should be damaged by the laser, leaving the skin unharmed. As a result, a contrast such as black hair and light skin produces the and most precise results.

Laser Hair Removal uses the following lasers:

Ruby hair removal laser:

 The Ruby hair removal laser was the first permanent hair removal technology. The ruby laser is good for eliminating light and thin hair since it uses a shorter wavelength of 694 nm to target melanin. Darker skin tones, on the other hand, are not treated with this laser technology. The Ruby laser system features a significant delay between laser pulses, which helps to reduce discomfort and is less uncomfortable in comparison. Because the repetition is slow, ruby laser treatments take longer than other laser hair removal technologies. For smaller treatment regions, the Ruby laser is a good choice.

Alexandrite laser hair removal:

For LHR, the Alexandrite laser is a common rapid system. With a wavelength of 755 nm, the Alexandrite laser is ideal for targeting melanin in hair follicles of people with light to olive complexion tones. The laser can treat a big area, such as the back, in a short amount of time, usually less than 30 minutes. Because the laser is often utilised at a high repetition rate, the repetition is highly uncomfortable, making this one of the least comfortable LHR systems. New technologies with built-in cooling devices are being developed to help solve difficulties and improve the patient experience.

Lasers for diode hair removal:

In the field of LHR, diode machines are a relatively new concept. They have an energy source made up of diodes, which are semiconductors grouped together to form a laser beam with a longer wavelength of 800-810 nm, which allows for deeper penetration into the hair follicle. On darker skin types, diode lasers are generally regarded safe. They are excellent at removing thick or coarse hair, making the Diode hair removal laser system popular among men for back and chest hair removal.

Hair removal laser with neodymium-doped yttrium aluminium garnet (Nd YAG):

In cosmetic laser technology, the Nd YAG system is the most advanced. It has several applications, including tattoo removal, laser skin resurfacing, and sun damage restoration, as well as an excellent hair removal system.

The light produced by Nd YAG laser devices is split into two wavelengths: 1064 nm and 532 nm. The 1064 nm wavelength targets hair follicles deep beneath the skin\’s surface, while the 532 nm wavelength penetrates follicles closer to the skin\’s surface (unless frequency doubling is used in laser design). Carbon is a better chromophore (a coloured chemical molecule that absorbs light) than melanin at this wavelength of 1064 nm. Before treatment, a carbon lotion is given to the skin to allow the undesirable body hair to absorb it. The Nd-YAG laser is considered safe for all skin types, including tan skin tones, because it targets carbon rather than melanin.

Hair eradication with intense pulsed light (IPL)

IPL uses a sort of intense pulsed light similar to lasers rather than a laser. IPL causes photo-thermolysis by pumping heat energy into the hair follicle, which is absorbed by the melanin. The wavelength, energy level, and pulse duration of intense pulsed light can all be customised.