... directly5.(50*lens)detect the nature of skin ,such as : skin texture , black acne, pigment sore ... hair, such as plugging hair follicles, excess secretion grease, bacterial infection, and so on. 7.Through ... directly5.50*lens)detect the nature of skin ,such as : skin texture , black acne, pigment sore ... and high technology computer to analyse the skin quality,oil moisture the beautyician could comparely ...