The growth of hair is a certain periodic, which is mainly related to the growth cycle of the hair follicles. The growth cycle of hair follicles is divided into growing phase, regression phase and resting phase. In the growing phase, hair matrix cells develop rapidly and differentiate into hair shaft, causing the hair to lengthen. During the regression phase, the hair bulb is degraded through apoptosis.
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.
Laser skin rejuvenation, also known as IPL photorejuvenation or pulsed light skin rejuvenation, is a technology that uses high-energy pulsed light for cosmetic skin treatments. It effectively addresses various skin concerns such as texture improvement, pigmentation and enlarged pores. This technology works by having water molecules in the skin absorb the laser energy, causing a rapid increasing temperature in the treated area, which will damage the epidermis and a part of the dermis.