I bought 2 bottles of this supplement specifically to improve my skin, I have sallow looking complexion. It gave me a dangerously beautiful glow in the first 2 weeks, I kid you not! I then decided to jump on to the glutathione iv wagon and my overall complexion got one shade lighter and I kept getting compliments on how I was getting prettier whatever that means lol. I then ran out of the Now glutathione capsules and continued with the jarrows brand and my iv, boy was I in for a surprise my skin returned back dull and became a bit dark! It's then that I realized the Now glutathione is the one doing the work. I will never be without this supplement and I have stopped the outrageously expensive glutathione iv.