Powerful beams of light are used to destroy hairs and damage the hair follicle to slow future hair growth. The light is absorbed by the pigment, melanin, which is responsible for the colour of skin and hair. For that reason, laser treatments work best on people with light skin and dark hair and doesn’t work well for light hair. Multiple visits are necessary for treatment and the risks include blistering, discolouration, swelling, redness and scarring. However, laser treatment is effective for large areas of unwanted hair and discomfort is usually minimal.
Because of the risk of burns or changes in skin colour, people with dark skin should only use this treatment as a last resort and always with an experienced professional.