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The term laser is the acronym or Light Amplification by Stimulated Emission of Radiation.
Indeed, it is a beam of light sent to targets such as:
- water in the cells,
- melanin, the pigment which protects the skin against the sun’s rays,
- haemoglobin, one of the principle molecules of blood.
The energy of the laser enables the modification of the target structure by heating it, coagulating it or destroying it. The body responds and regenerates: some cells renew themselves and produce more collagen and fibroblasts, molecules which ensures the skins firmness and elasticity.
If you would like to make use of this technique, your dermatologist or aesthetic doctor will explain which type of laser should be used, according to the desired results. However, here are a few explanations which will help you understand those recommendations more easily.
Conventional resurfacing lasers
Resurfacing lasers touch all of the skin within the area to be treated in a single session. They work at many levels by heating the epidermis, which leads to the production of collagen, the molecule responsible for the firmness of the skin.
Lasers used for conventional resurfacing are CO2 and Erbium lasers.
Partial Resurfacing Lasers
Fractional resurfacing lasers, as their name indicated, fractionate their action: they do not touch the whole of the areas to be treated but leave some spaces between the targeted areas of skin, which limits the risk of complication and promotes faster healing.
Fractional lasers fall into two categories:
- non-ablative lasers, which do not touch the outer layer of the epidermis. Instead they work at a deeper level by heating and causing the stimulation of the production of collagen.
- ablative lasers, which entail the elimination of the surface of the epidermis and the heating of the dermis.
Today there are also CO2 or Erbium lasers with a fractionated action.
Intense Pulse-Light Lasers
These lasers stimulate the production of collagen and elastin, two molecules which enhance the skin’s firmness and elasticity.
They enable the skin to be revitalized and they help stamp out age spots