Laser pigmentation removal is based on the blasting effect of laser and the principle of selective absorption by pigmented tissues. High-energy pulses act on pigmented tissues (such as pigment and tattoo inks), which absorb the light and rapidly expand, breaking down into fine pigment particles. This effectively removes the pigmentation.

At the same time, laser can effectively penetrate the dermis layer, and the light energy is converted into thermal energy to enhance the activity of collagen, thereby achieving whitening, skin rejuvenation, and improving the skin quality. Due to the selective absorption of laser wavelengths on specific target pigment cells, the surrounding normal skin is unharmed, making it effective for treating a variety of pigmented lesions, such as freckles, coffee spots, nevus of Ota, acquired dermal melanocytosis, age spots, sunspots, melasma, etc. Consequently, laser pigmentation removal is considered an ideal treatment method in the market today.

Figure 1. Mechanism of action of laser pigmentation removal