Intense Pulsed Light devices produce broad-spectrum, very intense light for very short bursts. When applied to the skin, the light penetrates the superficial layers and reaches the hair root. The hair bulb contains the highest concentration of the pigment melanin, and is, therefore, absorbs the light energy more quickly than the surrounding tissue and heats up.
As the hair root reaches somewhere between 60 and 70°C, it and its follicle are vaporised. Hair growth is permanently reduced by IPL, as the destroyed follicles are unable to generate new hairs. It produces results that are considered to be roughly equivalent to laser hair removal (which tends to be more expensive) and is often referred to as laser hair removal.
The efficacy of any treatment depends greatly on the practitioners carrying it out, so it is of the utmost importance to choose a clinic that boasts experienced and well-trained employees. If you are considering Laser Hair Removal, London has plenty of clinics to offer, but you need to make sure that the one you choose is reputable and competent before you trust them with your skin!