Fairlady_xoxo is correct. Buy alcohol swaps from ur local
pharmacy (eg. NTUC, guardian). These swaps are traditionally used
for diabetics who need to inject insulin, so need to wipe their
skin with the alcohol swab before injecting.
But the swabs can be used for many other purposes, eg. cleaning
ballpoint pen ink or paint or marker ink from ur hands, and for
cleaning various body parts eg. belly button, back of ears,
etc.
Alchol is an extremely effective organic (due to its polar or
hydrophillic nature) solvent that can be used (even more
effectively than water) to dissolve organic substances including
various types of 'dirt' on the skin.
