How does laser spot removal work?
Disease description:
I am 36 years old this year, and I have started to develop some spots on my face. I heard that laser treatment can remove spots, and I would like to know how laser spot removal works.
Doctor's answer (1)
Dr. Liu Wenmin
In general, the principle of laser spot removal is mainly based on selective photothermolysis. Laser spot removal uses laser energy of specific wavelengths, which can penetrate the epidermis and selectively target the pigment groups in the skin.
When the laser irradiates the skin, melanin granules in the skin preferentially absorb the laser energy. The pigment granules that have absorbed the energy undergo a thermal decomposition reaction, instantly breaking apart into smaller fragments. These fragmented pigment particles are gradually phagocytized by phagocytic cells such as macrophages and are eliminated from the body through pathways such as the lymphatic system or bloodstream. Over time, the pigmented spots gradually fade and eventually disappear.
The high selectivity of laser treatment minimizes thermal damage to surrounding healthy skin tissue. Therefore, the recovery time after laser spot removal is relatively short, and the incidence of side effects is low. However, it should be noted that although laser spot removal is an effective treatment method, it is not suitable for everyone or all types of pigmented spots. Before undergoing laser spot removal treatment, patients are advised to undergo detailed skin evaluation and consultation to determine whether they are suitable candidates for this treatment, as well as to understand the associated risks and expected outcomes.
