Like egg whites and flat beer, vodka is one of those ingredients that DIY blogs swear can really make your hair beautiful. I’ve tried it (as well as the egg whites and flat beer, thank you) and can confirm it does enhance shine. All you do is run vodka through your wet hair after a wash, then dry as normal. Don’t do it too often, though, and do follow up with some heat protectant or leave-in conditioner as your move on to your drying routine.