A few recipes for self-care items:
1 part baking soda (a deodorant)
1 part cornstarch (an antiperspirant)
20-30 drops tea tree oil (antifungal)
At this point, you could call it done and use it as a dry, powder deodorant. Or you could add a couple tablespoons of coconut oil and spoon it into a used, empty deodorant container. Let it sit for a day or two before using. I've found this works better than store-bought "all natural" deodorants.
Just mix some baking soda with enough water to make a paste. Add 10 or so drops of essential oils for scent if you want to get crazy. If you bought tea tree oil to make deodorant, throw that in. Remember, it's antifungal, so it cures dandruff. It's also a good insect repellant, so you probably won't get lice, if that's a concern of yours. Put it in a recycled container and use like regular shampoo.
Mix 1 part vinegar and 1 part water and use after shampooing. I'm still figuring out the best application method for this. I use a spray bottle currently, but I think one of those ketchup/mustard bottles with a skinny squirt tip might work better.