Water oxygen meter principle: OMEGA: no needle water oximeter adopts painless non-trace noninvasive method, oxygen injection apparatus using the extract concentration only 21% of the oxygen in the air, through the special technology of molecular filter compressed become a concentration of more than 95% of the oxygen activity factor, and then released under the pressure of 0.2 mpa, through a special way to join the active material of spray evenly on the face.How does it work?Can oneself match liquid to use, now facial film contains lead mercury hormone to wait, can oneself match essential oil, hyaluronic acid to wait.