Lasers seem to be used for everything nowadays - from 3D carvings to acne removal. In order to understand how laser works on skin, hair and acne, it is first necessary to understand what laser is, in the first place. LASER isn't really a word - it's an acronym, just like UNICEF or UNESCO. Its full form is "Light Amplification by Stimulated Emission of Radiation". As the definition/full form itself says, laser beams are produced by amplifying light waves, I.e. Increasing their amplitude. This amplification is done by passing light waves repeatedly into a medium which causes the waves to rise in amplitude. The medium is called a "gain medium", and the amplification usually uses mirrors or total reflecting prisms. The end result is that a highly focused beam of energy jets out of a cavity in one of the reflecting surfaces, and is accompanied by a relatively weaker beam of light that emerges due to the constant and repeated reflections taking place. Cosmetic laser clinics use pulsed lasers. In pulsed laser, the beams of energy are emitted in pulses rather than a single, constant and steady stream. This is useful for several reasons:
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Cosmetic laser clinics use pulsed lasers. In pulsed laser, the beams of energy are emitted in pulses rather than a single, constant and steady stream. In hair removal, the frequency of laser is such that melanin-heavy follicles will respond better than the surrounding, light-coloured portions. Thus, the laser beam is preferentially absorbed by the hair follicle, and its cellular structure is changed permanently by the action of the heat.
For hair removal in London, check out the laser clinics in town and nearby. While youre at it, why not look at acne removal too?
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