How long does the acne medication Differin take to work?

I recently visited my dermantologist and she prescribed Differin for my acne which i have had a hard time controlling lately. My acne is hereditary i guess because my parents had it growing up so i was just wondering how long differin is going to take to work?How long does the acne medication Differin take to work?
it takes one week to workHow long does the acne medication Differin take to work?
I take a different pill for acne. at first my face got worse, but it has improved a lot since then. but progress takes time, as my dermatologist said, you can't expect a miracle over night. (I started at the end of oct 2007)
I got that prescribed by my doctor and it took a while to start working. It works on the acne not currently on your face, but the acne forming that will pop up next. It took a while but it works good for me:]
take a raw potato, wash it, slice it into thin slices, rub the juice all over your face, let it dry and wash it off in the morning. thats all you have to do. you can do this as often as needed if its that bad but i will do it like 2x a week if i get a bad break out and it clears my skin fast. hows that for natural home remedy..cheap too..but most important it'll work

hardware