... with exquisite workmanship. Efficacy:1, Generating heat.2, Increasing the blood oxygen and nutrients.3, Promoting blood circulation. 4, ... fibers contract, immediate relaxation of the skin, wrinkles are stretched, then the dermis to produce the thermal effect of collagen hyperplasia, ... activity is very slow. Once the skin is damaged, the skin around the wound around the base 2mm cell division rate to ...