I searched, but I couldn’t find it here. Anyway, I’ve been using my GF with a lot of masked wood lately and my hands seem to be stained this lovely shade of poo-colored brownish yellow. I’ve tried alcohol and scrubbing, but nothing seems to get it off.
I haven’t found anything that works except washing my dog. Which suggests that maybe soaking my hands in soapy water and then using a nail brush might work, but I don’t have the patience for THAT.
I don’t know the name but soap for mechanical work with sort of sand in it was such efficient but abrasive. I have tried to do a DIY one using liquid soap and a pinch of coffee ground. Not as effective but you can give a try. On acrilic paint, it works.