How you shampoo with baking soda: Put the mixture in a bottle (and it sounds like a squirt bottle is most handy) and shake REALLY well before applying. After wetting your hair in the shower, apply the baking soda mixture to your scalp and rub in a circular motion all around – focusing on the scalp, not the rest of your hair. Rinse well.
Then, you “condition” the ends of your hair with a mixture of apple cider vinegar and water.
How you condition with ACV: Mix 2 Tbsp apple cider vinegar with 1-2 cups of water. Either just rinse the ends of your hair with the whole thing, or rinse your entire head with it. For now, I’m going to stick with the ends, because I’ve read that – especially in the beginning while your scalp is adjusting – too much ACV on your scalp could cause more overproducing of oils.