... facial machine 1.98% pure oxygen 2.wrinkle and pigment remove 3.whiten, peeling,firming skin 4.CE, OEM microdermabrasion machine Working ... most advanced PSA technology (transformer adsorption principle), this machine can instantly and continuously separate the high-concentrated, clean ... of oxygenOxygen is indispensable for the human body. In the catabolism process, there must be enough oxygen, ...