hydroquinone is a miracle product, but it does have a price. it faded my brown spots (which i acquired from the birth control pill) really quickly, i saw differences within a week, but it's VERY oily so you will break out. which sucks. it's a trade-off. i'd use it til you're happy with the fading and then stop, maybe switch to glycolic acid or azelex which won't break you out hopefully. and stay out of the sun!!! i was recently in a sunny climate YEARS after i used hydroquinone and my forehead and upper lip spots cam back with a vengeance. however, my cheeks didn't, which was odd. anyway you do have to use sunscreen forever, sorry to say. also i have to tell you that pregnancy brings them out, so if you plan on that, it's a bummer.
take care and keep us posted.