The Confused Check out her reply in the comments #kajol Facebook The secret to skin lightening in celebrities is finally out. There are a lot of other things, but most important is iv glutathione drips. These block melanin production, thereby lightening the skin. The Internet Is Obsessed With Kajol's Transformation But What's the Secret? Google it, and the first thing you'll see is IV Glutathione. Some call it a magical fairness treatment, but is that What do you think Kajol must have done to lighten her skin tone? From a Dermatologist's perspective, she could have undergone 'GLUTATHIONE' Treatment, IV along with some skin brightening and lightening peels,