I use G&G skin lightening products,but I need to know if these products have any side effect/

I know that the G&G brand is also manufactured from the same company (Nouvelle Parfumerie Gandour) who manufactures Bio Claire. Bio Claire has been banned in several countries for containing illegal doses of the steroid Clobetasol Propionate, which is potent and toxic. They also state that they do not contain hydroquinone but were tested to contain 0.06%. I'm not against the use of Hq, but it was wrong for them to lie to their consumers.

I am unsure with G&G, but personally Nouvelle Parfumerie Gandour is known to be a crooked and sketchy company and all of their products could be adulterated with practically anything just for a sell, so I avoid anything made from them from now on.