well ive been on accutane 4 times.. it always works but my acne comes back after a while.. this doesnt happen with everyone so dont let it get ur hopes down.. neways.. the redness usually stayed until i finished the treatment.. i started noticing my skin lookin better right after i stopped the treatment.. but then after 6 months to a year mine startin returning slowly.. but like i said before dont let that stop u.. it usually works i just have really really stubborn acne. as far as the scars go.. they will fade with time.. u can also look into fruit acid peels after ur accutane treatment.. its got rid of all my scars.. good luck!