Legacy uses two kinds of medical lasers to treat scars
- Pulsed dye laser (PDL), which is used on raised, red and newer scars and in combination with CO2 laser therapy on older scars.
- Fractional CO2 laser therapy, a new technology used to treat older (mature) scars. It is designed to reduce feelings of tightness and to improve the appearance of the scar.
The two types of lasers work in different ways
The pulsed dye laser (PDL) goes through the skin — without breaking it — to destroy tiny blood vessels (capillaries) near the surface of the scar. This causes the scar to shrink and become less red, and often less itchy. The laser uses a high electric lamp that produces a short, high-energy flash of light. The light is colored when it passes through the dye. The color of the dye can be changed depending on the type of treatment.
Carbon dioxide (CO2) lasers can remove a very thin layer of tissue from the surface of the skin without removing deeper layers. They are sometimes used in other treatments, for example, skin cancer.
The CO2 laser pokes tiny holes in the old scar. In the process of healing these tiny holes, new tissue is formed. This new tissue is healthy, non-scar tissue. As a result, the scar shrinks and becomes smoother and more flexible.