... therapy: Promote protein and collagen compounding, activate skin, shrink slack skin.Purple light: lymph drainage, adjust circulation, weaker ... oxygen alternation, stimulate micro circulation, rebirth skin, resist skin aging, improve skin slack and erythematic.Green light:7) Biologic ... lights.8) Physical therapy: Regulation of skin gland function, improve oily skin, blackheads, acne, comedy and etc. ...