Hello everyone one. I read on one thread that taking glutathione and using creams containing HQ would cause the HQ cream to be ineffective due to the antioxidants in the glutathione. I take 500 mg of gluta daily, not for skin lightening purposes but for overall health. I take this along with vitamin c. My question is, would the 500 mg that I take daily be enough to cause HQ creams not to work? Or would there have to be a lot more glutathione in the blood to cause this?