From a site that sells inkjet refills:
"While inkjet ink is not harmful, we do not designate as a non-toxic,
because it is not made for consumption by humans or animals. Reviewing
MSDS information will indicate so. To remove ink from skin dilute
household bleach with 50% water. DO NOT RUB! Press on area until color
is gone, flush with water and moisturize with a good quality hand or
Kalvins: Safety Information
Essentially the same advice is posted by All-Ink Inkjet Printer
"How do I get printer ink off my skin? If you ever get a little ink on
your hands you know what a pain it is to clean it off. To get the ink
off, use a mild bleach and water solution. Then wash with soap and
water to remove the bleach and excess ink."
All Ink: Resources & Information
While I'm sure bleach will do the trick, it is a bit harsh on
sensitive skin. I have had great success removing inkjet ink from my
hands using a product called "Super Tough Hand Scrub." It's also good
for getting off Magic Marker ink and even Super Glue. You can buy a
pound of it for $6.40 online. That should be enough to clean off a
lifetime supply of ink!
General Graphic: Super Tough Hand Scrub
"remove ink from skin" + "inkjet"
"remove" + "inkjet" + "ink"
"super tough hand scrub"
I hope this information helps. If any part of my answer is unclear,
please ask for clarification.