C60 can be dangerous. It is made up of carbon nanotubes and if any of the bucky balls or nanotubes are broken, they are VERY toxic and carcinogenic. Sourcing pure C60 is extremely important, which is hard to do bc there is no reputable lab that makes them. Even still, if there is any damage or degredation to even pure C60, you will have carcinogenic carbon nanotubes in you. Also, it is not possible to detox them, they in are in you forever.