Hello,
I actually applied Carac on my arms for 30 days. It was extremely painful, but I obtained good results. Since my results were so good, my derm decided to try it on my legs. It didn't work. Well, since then I have switched derms and he is having me try Efudex on my legs. After applying it, i am supposed to wrap my legs in saran wrap for 30 minutes. The skin on the legs, obviously is more thicker than your face and arem, therefore you need to wrap your legs in the saran wrap in order to get better penetration. I have been doing this for a week and the only results so far are behind my knees which is very painful. I'm told that it may take 2-3 weeks before I see anything on the rest of my legs. Depending on these results, after 30 days, I will try it on my thighs. I'm assuming that I will have to wear a lot of skirts. :)