Vinegar works for sure!! Funny you mention this but my wife, God bless her, just helped me get epoxy out of my hair. I was certain I was about get a SHORT hair cut but the vinegar worked perfectly.

Funny feeling taking off a hat it is stuck to you hair. For the curious, I was touching up the fillets on bulkheads now that I have hatches cutout. Had my head up and in hatches and obviously got some epoxy on the edge of one of the openings. Put on the old straw hat and mowed the grass. Amazed that it had not set up in my hair.