How can I remove redness caused by using Skinlite cream? (photo)

Once you stop using glutathione whatever whitening of the skin you experienced will eventually go away. It is not a permanent solution to your problem and can be toxic in large quantities. 

There are different protocols for skin lightening with glutathione and vitamin  C . The problem is that the treatment must be sustained indefinitely to achieve the goals you desire and when you stop the treatment your skin color reverts back to what it was before starting the treatment, but ...

Thanks for your question and posting a picture.  Your self image is big deal to you, but I have to say your skin looks "normal".  Since it bothers you, start by looking for prescription strength 4% Hydroquinone (HQ).  If you want to consider a laser, we have been very successful using the Pic...