Brightening: These injections have glutathione as an active ingredient. Glutathione is a known antioxidant. Vitamin C and glutathione are combined to give an overall lighter skin tone. The injection should be given every 1 week for 2-4 weeks. After the first set has been completed maintenance does of one or two injections per month may be continued. There are no side effects if dosages are low and regularly monitored with blood testing.This gives aglow to the face and effect remains for 3-4 months. Done with very fine needles, so practically painless.