A laser is very pure ,intense light of a single wavelength.When the laser light shines onto the skin,a certain target (chromophore)absorbs the laser light.Different targets such as water,melanin(skin pigment)oxyhemoglobin(a component in red blood cells)absorb different wavelengths of laser light.After absorption of the laser light ,the target is heated,and phsiycally altered or destroyed.Laser is used to selectively destroy unwanted targets such as growths,pigmentations,and blood vessels.
It is important to note that not all skin lesions can be treated with lasers.Your Dermatologist will be able to advise you on the most appropriate treatment.