Joaquin, Many uncured epoxies will dissolve with acetic acid (viniger). I would try this before using solvents. It's safer and less expensive. Soak the area with it and lightly scrub with one of those green scrubby pads (scotch bright). Then rinse with water and wipe with a towel. I use this to clean my epoxy roller and spreaders and the occasional oopses that occur, as well as when I inadvertantly get epoxy on my hands. The last thing you want are solvents such as acetone or methyl ethyl ketone on the skin as it can carry the chemicals into the blood stream, not to mention other hazards such as breathing fumes and risk of fire or explosion if working indoors.

Hope this helps

Tom