Can laser hair removal provide permanent hair reduction?
Nov 26, 2024
Source: Cainiu Health
Dr. Han Xuefeng
Introduction
The principle of laser hair removal is based on selective photothermolysis. The laser can penetrate the epidermis and reach the hair follicles at the root of the hair. Melanin within the hair follicles absorbs a large amount of laser energy, converting it into heat energy, which raises the temperature of the follicles. This process damages the follicular function, rendering the hair incapable of regeneration, thereby achieving the purpose of hair removal.
Generally speaking, laser hair removal can permanently remove hair. The specific analysis is as follows:
Laser hair removal is an advanced method of hair removal based on selective photothermolysis. The laser can penetrate the epidermis and reach the hair follicles at the root of the hair. The melanin in the hair follicles absorbs a large amount of laser energy, converting it into heat energy, which raises the temperature of the follicles, thereby damaging their function and preventing hair regrowth, thus achieving the purpose of hair removal.
Since laser hair removal only targets hair in the active growth phase and cannot guarantee that all hair follicles are in the growth phase during each treatment, and not all follicles in the growth phase can absorb the laser energy completely, multiple treatments are usually required to achieve optimal results. Most areas require 3-5 sessions, with each session spaced at least one month apart. As the number of treatments increases, the interval between sessions may become longer.
When considering laser hair removal, it is recommended to consult with a physician, develop a suitable treatment plan according to individual circumstances, and pay attention to post-treatment care and sun protection to maintain the hair removal effect and reduce the occurrence of adverse reactions.
