... oxygen shortage, such as dark and light skin, wrinkles, looseness, pigmentattion and the conventional skin problems.4.Oxygen inhalation treatment: ... life, industrial pollutioHalitosis,abdominal, distention,coprostasis, dry skin, looseness and no elasticity,whelk,fleckThe second layercellsThe spread of the ... Flux:1-3L/minOxygen concentration:≥90% professional skin care products with factory price