Fiber laser freckle removal is a common minimally invasive method for treating facial pigmentation.
Selective photothermal effect: Fiber laser can generate high-energy beams of specific wavelengths, and pigment particles in the skin, such as melanin, have the characteristic of selectively absorbing light of these specific wavelengths. When pigment particles absorb laser energy, they will instantly generate high temperatures, causing the pigment particles to break into small fragments.
Photomechanical effect: While laser shatters pigment particles, it also generates optomechanical waves, which can further shatter pigment particles, making them smaller and easier to be engulfed and metabolized by macrophages in the body, thereby achieving the effect of fading and removing pigmentation
