... ,desalting spot,inhibiting growth of melanin,removal of freckle,so that it could improve effectively to skin problem caused ... sterillizing destroy the living environment of bacillus,diminish inflammation,sterilization,so that it can remove the acne from the skin ... blue light is treated at glabella point ,it will make body relaxed,will have good improvement and calm effection to pain,haemostasis,etcII ...