Does glutathoine really offers skin lightening? How long will it take to lighten my skin. I am taking it with vitamin c how well will it work? And could you provide an external product to use with the glutathoine that will speed up the skin lightening process.

Glutonone supplements help. But I use a Glutonine cream for about 2 months with no results. Even Glu soap didn't work for me. Only the vitamin work. I bought mine from Ebay