I've been on Roaccutane for 3 and a half months now. I weigh 60kg(ish) and have been on 60mg daily for most of my treatment. I cannot understand why my skin has shown no improvement whatsoever, and needless to say I am very worried about whether I will be one of those few unlucky people who show no response to it. My acne was only moderate-occasionally severe when I started so I would have thought it should be ok by now. Advice and thoughts please!