Does Long Term Usage Of Skinlite Cream Have Adverse Side Effects?

Hi....I have been using skinlite cream for the past 2 months...I became fair and I am really happy for that....but I heard that I might get serious complications if I use it for long tym....so I am using skinlite and kojivit creams alternatively...but if I am not using liteskin regularly my skin fades back...I am just losing my confidence because of dis...I am ready to stop using liteskin but I want to retain this color...I just want some remedy