"a splash of acetone"

Where in darkroom work acetone is used?

(I have handled 1L metal containers of acetone (for surface cleaning) in my DIY workshop in the past without any face protection. Though by becoming presbyoptic at least a most basic eye-protection is know inherent to me... my glasses)

To highten protection I use a pair of safety glasses with a slight rim to go over my standard glasses. I do not use googles with skin cintact, nor do I (yet) use safety glasses with correcting lenses.