Having been closely connected with the Gravure printing Industry for many years I'd stear clear of Toluene at all costs.
Best Solvent you'll find for quick clean drying of inks on very high speed lines, and as mentioned will de-grease/clean most things.
However those things tend to melt, or suffer surface damage soon afterwards.
As for unprotected skin, don't believe you've washed it off, its already sunk in.
RIBBED For extra pleasure.
Member of the ebay Blue RIB cover club.
Member of the Bombard 380 Aerotec club