What should I use to clean my hands?

[stuart noble]

In the old days it was acetone. Now it's something else I think

[Dave Liquorice]

Still is but with lots of other muck in it to remoisterise the skin after use.

[John Rumm]

and sold in smaller bottles, because terrorists would never think to buy several apparently.

[Grimly Curmudgeon]

That's old CFLs for you.