oxygen spray 1.Oxygen Jet and Bio together 2.Skin Rejuvenation,Acne Treatment 3.CE /OEM Oxygen Jet Photon Skin Rejuvenation Machine,Oxygen Jet Beauty MachineHow it works98 % of the skin is made up of collagen. The elder we are, the less oxygen our blood carries,which will fail collagen to generate. Meanwhile, skin moisture loses a lot and epidermismetabolism can not carry out normally.On the ...