Wow, those look like some big guns to me, mad muscle underneath waiting to show its face. Also keep in mind the underside of arms is harder to see toning definition, how does the outer-side look? You should be able to see a bit more definition naturally. I personally haven't tried things like 'Hydroxicut' but you might try something similar that the more experienced supplemental weight-loss people recommend on these boards. You might just be able to get away with modifying your diet a bit and changing your routine to more 'toning'-related exercises without the use of any supplements for assistance. Do you have any problems with toning else-where or is it only your arms?