What is the difference between laser hair removal and freezing point hair removal?

Laser hair removal is based on the principle of thermodynamic action, the beam penetrates the hair follicle epithelium on the surface of the skin, so that the hair follicle is destroyed, thus achieving the effect of permanent hair removal, and freezing point hair removal is based on this to increase the effect of freezing point cooling, can reduce the feeling of pain, and photon hair removal is a way to achieve hair removal effect using the pyrolysis principle of intense pulsed light source.