Friday, June 10, 2011

Know Science of Laser Hair Removal

There are two main types of hair:
• Terminal hair: thick, long and normally pigmented with melanin. These include the hair on the scalp, armpits, genitals, and eyebrows. Hair of the chest, back, legs, and arms may also be the terminal hair
• Vellus hairs: or "peach fuzz" short and non-pigmented and can be found in most areas of the body and face.
Anatomy of human hair
The outcropped area of the enclave is important in cycling and regeneration of hair. The papilla is very vascular area enclave and provides nutrients and oxygen to other areas. These areas must be disabled to permanently destroy the serious follicle happening and that is why laser hair removal is used.
The hair grows in 3 phases: anagen, catagen and telogen. Laser hair removal techniques can only target the active or anagen growth, in the final stage of flooding. In any of the 20-85% of hair is at any time in the anagen phase. This varies with the different areas of the body. Regression begins with the catagen-section. Telogen phase during the follicle is "dormant" and prepare for the development of new hair. Because the laser device can handle the hair anagen phase, only a number of treatments, it is necessary for the desired result.
Lasers remove hair in the process of selective photothermolysis. Light energy from the laser is converted to thermal energy in the hair follicle. Laser targets melanin, or painted area of the nail. When the thermal energy or heat is absorbed by the melanin in the cellular structures (i.e. boule and papilla) are not destroyed. All lasers also originate a cooling mechanism, which prevents damage to the surrounding cells.
All laser hair removal methods use same basic mechanism. However, it is not suitable for all operating. So you need to evaluate best medical lasers as per your need.

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