Sir I mostly spend my time in air conditioned room u can say almost 18 to 20 hours daily I am at air conditioning room and I used hydroquinone cream and it gave excellent result my fair skin turned to milky white and all dark spots fade away and my skin is clear Sir I wanna ask I have heard over use of hydroquinone in long run cause ochronosis does it can be same with my case coz I rarely go outside in sunlight and mostly spend my time in a room so what can be it's consiquences then