I was cooking over the weekend and didn’t notice until many hours later that i have a large, bright yellow stain on my palm, presumably from soy or teriyaki sauce (the only other liquid I cooked with was balsamic vinegar). I have tried to remove it with several kinds of soap, bleach, Mr Clean, Windex, Pine Sol, Lysol, Shout laundry stain remover, baking soda, dishwasher detergent … NOTHING works. It hasn’t even come off a little bit. I’m completely baffled! Help?
Thanks everyone for all the great suggestions. I have since tried baby oil, lemon (both real juice and out of the squeezy plastic lemons) and nail polish remover (acetone) … and none of them worked! (And yes, since the stain happened yesterday evening, I’ve had a hot shower and tried to scrub it off, no luck!)

I can’t imagine what else it could be if not teriyaki/soy sauce — my palm was clean before I started cooking dinner and I noticed the stain just before I sat down to eat. I used very old bottles of teriyaki and soy sauce, however, imported from Japan with all the characters on the bottle in Japanese, so I can’t decipher if there’s an expiration date. The lid of the teriyaki sauce in particular was really sticky with sauce and I’m pretty positive this is what the stain is from.

I will try WD-40, Goop and a Tide Pen tomorrow — thanks again for the ideas!