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Laser Hair Removal > Nd Yag Long Pulse Laser Hair Removal Technique

Laser is an acronym for Light Amplification by the Stimulated Emission of Radiation. Unlike normal light, laser is made up of one colour, the rays of light are parallel and the rays travel in step with each other. These properties make laser light very powerful and capable of removal of unwanted body hair.Nd:YAG stands for Neodimium Yttrium Aluminium Garnet. Skin and Hair contains melanin which absorbs the laser energy. Laser of shorter wavelengths are better absorbed by melanin than the lasers of longer wavelengths.

Nd:YAG is a laser with a long wavelength of 1064nm. The laser beam penetrates the skin and gets absorbed in the hair follicle residing under the skin surface. The pulsed laser energy is absorbed by the pigmented hair shaft and transferred to the surrounding follicle. The heat build-up caused by the absorption of energy by the hair itself is capable of creating follicular damage and retard or prevent future hair production by that follicle. Because the laser beam is large in diameter, it affects a large number of hairs simultaneously.

 

Since Nd:YAG has a long wavelength it is not absorbed to a great extent by the melanin in the skin. Hence the energy is not absorbed to a great extent by the melanin in the skin. Hence the energy is not robbed by the skin and the laser can penetrate deeper into the skin reach the hair follicle. This also avoids the damage to the skin. One can also increase the energy settings safely in this type of laser, which in turn increases the efficacy of the laser. This make Nd:Yag very suitable laser for all type of skin and all types of hair.

 

Diode laser on the other hand has a wavelength of 800 nm. As compared to Nd:YAG, this is absorbed by the skin melanin to a greater extent and hence has a greater chance of causing burns to the skin.

 

Will the Laser Hair Removal be Painful?

 

While some areas of the body are more sensitive than others, most clients report little or no discomfort. Most people experience a stinging, burning sensation when a laser pulse is delivered. A mild redness in the treated area is expected. This will remain for some time. To reduce discomfort, we apply a cooling gel. Also the laser itself has a cooling deice, which cools your skin to minimize the discomfort.

 

How many Laser Hair Removal sittings will be needed?

 

Reduction of hair growth is observed in 6-8 sittings. However the number of sittings required to obtain results vary with hair density, hair color, skin types, the service area and hair growth cycle. The density of hair and its growth cycle are affected by many things such as age, ethnic background, hormones or medications. Hair growth cycle is divided into three phases. The anagen phase or the growth phase in which the hair is actively growing. During this stage they contain maximum amount of melanin. The other two phases are catagen (regression) and telogen (resting).

 

The hair follicle in the anagen phase is the main target for laser energy and represents the most vulnerable phase of the hair growth cycle. Telogen or resting hairs are not actively growing and appear to be more resistant to the laser energy. All hair follicles are not in the anagen stage at the same time. Some are in anagen phase, some in catagen and some in telogen phase. The percentage of hair follicles in the anagen phase in the different parts of the body is different. Thus the number of sittings required differ for each body part and for each individual.

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