Can laser hair removal permanently destroy hair follicles?
Jan 17, 2025
Source: Cainiu Health
Dr. Chen Lu
Introduction
Laser hair removal primarily utilizes the principle of photothermolysis, selectively targeting and destroying hair follicles by adjusting specific wavelengths to absorb melanin, thereby achieving permanent hair removal. Thus, the hair follicles can be permanently damaged during the treatment. However, the number of required sessions depends on the hair growth cycle; one treatment may be sufficient during the anagen (growth) phase, while multiple treatments are needed during the transitional or telogen (resting) phase.
Generally, laser hair removal works through the principle of photothermal action. The usual reference price for laser hair removal ranges from 2000 to 4000 yuan per session, with visible improvement typically seen within 1-3 days. Laser hair removal can usually permanently destroy hair follicles, but the timing of hair removal should be chosen according to the hair follicle growth cycle. Detailed explanation is as follows:
Laser hair removal primarily utilizes selective photothermolysis, adjusting the laser to a specific wavelength so that the light beam penetrates the epidermis, destroys hair follicles, and absorbs melanin in the skin, thereby achieving hair removal. Moreover, the destruction of hair follicles by laser is permanent, and the follicles cannot repair themselves afterward, thus achieving long-term hair removal results. However, the number of treatments required depends on the hair growth cycle; generally, one treatment during the active growth phase of the hair follicle is sufficient, while multiple treatments may be needed if the follicles are in the transitional or resting phases.
To ensure safety, it is recommended to undergo laser hair removal at reputable medical institutions. Additionally, proper local care should be taken after laser hair removal, avoiding early water contact and exposure to ultraviolet light.
