About Gluothine. Take this supplements?

Recently Gluothione IV and supplements are in trend for skin whitening. I have did a basic review on gluothine property . Popular brands has supplements that claims 2-3 months of consistent use will improve skin texture and skin tone . At the same time after discontinued it has reversal effect on skin health . Is it safe to use gluathoine supplements provided by top brands ? Does it really has reversal effect on skin health? Does it make u go darker when you stop it ? Can anyone use it ? What are the factors to be considered when we are taking the supplements ? Does it requires proper dermatology consultation or we can take it up? Who should not take this supplements ? Will be helpful if we get to know about this in doctor point of view. Thanks in advance