November 26, 2007

How Laser Hair Removal Works  

Photothermolysis is main technique behind Laser hair removal .Laser energy is converted into heat, which disables the hair follicles leaving the surrounding skin unchanged. Certain areas are focused just below the skin, without heating the rest of it. In addition to laser, some epilators use a xenon flash lamp which emits full-spectrum intense pulse light (IPL).

Energy released by laser is absorbed by dark objects called - chromophores that can be artificial or natural. Melanin is considered the primary chromophore for all hair removal lasers. Melanin is naturally present in skin. It gives skin and hair its color. Eumelanin and pheomelanin are two types of melanin present in body.

Only black and brown hair can be removed due to selective absorption of photons of laser light. As laser is attracted towards dark pigments and therefore works best with dark coarse hair. Dark skin and dark hair were not ideal combination for Laser hair removal. But now Light skin and dark hair are an ideal combination, but new lasers are now able to target dark black hair even in patients with dark skin.

Electrolysis is another method that's clinically proved for permanent removal of hair. But Electrolysis hair removal process is very slow as it involves treating one hair at a time. That is why it can be used for smaller areas like eyebrows and upper lips.

In addition it takes so many treatments compared to laser to complete a large area, and the extreme cost and discomfort are such that electrolysis is rarely used for large areas. At this time, it is the only permanent option for very fine and light-colored hair. laser hair removal treatment is best as it is a long-lasting method of hair removal. Shaving or threading are also hair removal methods but they are not permanent.

Laser treatment is used to remove facial hair and age spots. Laser works by focusing on certain areas just below the skin, without heating the rest of it.

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