LED Acne Removal Machine With 420nm Blue Light Therapy , Seven Color Feature and Application Blue Narrow Band 420nm Under blue light, protoporphyin(PP9) generates singlet oxygen Singlet oxygen attacks and kills ... Read More
420nm Blue PDT LED light Acne Removal Machine , 120mw / cm2 For Skin Whiten Feature and Application Blue Narrow Band 420nm Under blue light, protoporphyin(PP9) generates singlet oxygen Singlet oxygen attacks ... Read More