... . The dermal layer could be heat up to 45°C-60°C, to generate more collagen, improve skin texture, remove wrinkle, tighten ... internal tissue is increased, heated collagen fibers are shrunk immediately and rearranged to stimulate regeneration of collagen protein for a long term, ... make them rear ray, rebuilt skin soft bracket, finally get tight skin, remove wrinkle, recover skin elasticity and luster.