How fast does proactive work? ?

Some friends of ours gave us this proactive 3 step stuff. I used it last night on a sertain part of my face (incase my skin doesn't like it and I get a break out) and when I woke up thismorning I could swear that my skin in the area looked better! There went as many pimples and it looked less red-ish! But it's only been 1 day! Is it really that quick? Or am I just imagening it?