How does fractional laser treatment work for scars

The fractional carbon dioxide laser is a gas laser, and the principle of action is "focal photothermal action", which generates an array of tiny beams arranged through the fractional laser, and forms a number of tiny thermal damage areas with three-dimensional cylindrical structures after acting on the skin, and each tiny damage area is surrounded by undamaged normal tissue, and its keratinocytes can quickly crawl to make it heal quickly. It can make collagen fibers and elastic fibers proliferate and rearrange, so that the content of type I and III collagen fibers is close to the normal ratio, and the structure of pathological scar tissue is changed, and the elasticity is gradually softened and restored.

The main absorbent group of fractional laser is water, which is the main component of the skin, which can make the dermal collagen fibers shrink and degenerate when heated, and induce the wound healing reaction in the dermis, and produce orderly deposition of collagen, promote collagen proliferation, thereby improving skin elasticity and reducing scarring, and its main mechanisms include: (1) damaging and inhibiting the vascular tissue in the scar tissue; (2) vaporization to remove scar tissue; (3) inhibition of fibrous tissue production and excessive hyperplasia; (4) Induction of fibroblast apoptosis.