I've gone from washing my hair every day, to once every 3 days and I'm not sorry about it!!! Though my boyfriend and dogs may be. I used to use the shop bought dry shampoo almost daily when I was obsessed with bigger hair - but I couldn't get over how many canisters I was going through and as with everything else, I just loved the idea of the zero waste, make your own set up we can do now. The 4 ingredient recipe is below (only 3 if you've got light hair!); Dark hair: 2 tbsp