As a final note, if using pure acetone or anything containing caustic soda (like paint/varnish stripper) then it goes without saying to avoid direct exposure to flesh
With anything containing caustic soda (especially if you're mixing from granuals) don't breathe the fumes in too much either.
And with caustic soda, warmer=stronger. Apply with a brush, not a rag.
wash off, wear gloves, avoid splashes, in a ventilated area or outside.