LASER (Light Amplification by Stimulated Emissions of Radiation) are devices that generate light rays composed by simultaneous vibrations passing through the epidermis. Today's advanced laser technology allows us to safely, easily, and effectively treat many benign skin lesions painlessly, on an out-patient basis. Other skin conditions can also be treated with lasers, included aging and sun-damaged skin, tattoos, moles, warts, skin tags, stretch marks, acne and hypertrophic scars.The wave length determines the depth of the correction and the color of it defines the types of lesions that can be corrected. It destroy by heating the tissues or cells that can absorb the wave length.
For example, red-colored structures under the skin (micro-vessels) will selectively absorb the green light "concentrated" by the laser. Today, dermatological lasers only work on their target (melanin, haemoglobin, ink pigments, aged dermal tissue or scarring) and do not cause any damage to skin's other constituents.
The four main types of laser used to treat various skin conditions are :
- lasers treating vascular regions and red spots:
vascular lasers
- lasers treating tattoos and pigmentation (brown spots): Resurfacing laser, YAG Erbium laser or CO2 laser
- depilation lasers:
Alexandrite laser.
- lasers treating wrinkles and scars:
YAG Erbium laser, CO2 laser, pulsed-dye laser