Printer ink on hands and textiles
Printer ink is generally very persistent.
To remove, simply spread "Bref" cleaner in your hands and rub with a towel.
Soak on textiles, also simply with "Bref" -cleaner (test before in a not visible place, because of the colorfastness), then wipe dry with water and sponge or cloth.
Bref is available in two variants, both are doing quite well.
Really a super middleweight, which must not be missing in any household.