To solve such problems that blacking of skin due to applied UV which occurs on the face surface and the back of the hands which are constantly and directly exposed to the sun light is not only caused by the recent deterioration of the earth's environment but also increased by the occurrence of fine subcutaneous bleeding caused by face washing with pressure and friction with the hands, so that face washing with strong pressure with the palms of the hands which women often do for the removal of cosmetics has to be avoided in particular, and the weakening of the radix pili of the head skin due to shampooing and the washing of the entire body with friction during taking a bath have to be also avoided.

By surrounding the skin with the micro-bubbles or nano-bubbles made of pure water or washing water matching the self constitution or similar micro washing foam, washing with composite ultrasonic oscillation of the whole frequency zone naturally generated by the explosive fracture of the foam with pressure occurring with the natural explosion of the washing foam avoids conventional washing with physical pressure and friction and removes foreign matters even from the depth of the micro radix pili important for skin respiration.