A glow drip delivers glutathione with vitamin C and supporting antioxidants intravenously. Glutathione is the body's principal antioxidant; the rationale is that raising it reduces oxidative stress and shifts pigment production toward a lighter, more even tone.
We want to set expectations honestly, because this treatment is widely oversold. The evidence for IV glutathione as a skin-brightening agent is limited, results are modest and gradual, and it is not skin bleaching. What patients reliably report is a fresher, more even, better-hydrated look. Anyone promising you several shades lighter is not being truthful with you.