Last winter here in NH with February being the coldest (-47F) driest I've ever experienced and when things thawed, my hair, which was breaking to an alarming degree and skin were in need of an immediate, intensive moisture treatment. I hadn't showed in over a month, but when I did I noticed that my very mild natural soap was too harsh and then discovered how hard the well water is here.
This experience led me to research how to restore and maintain a healthy PH for overall health. Now, nearly 7 months later, after eliminating soap and shampoo and making my own moisturizers and hair products, I've finally healed and reversed the health of my skin and hair. Using baking soda as some have already described, but now I use only water treated with a teaspoon of baking soda for a gallon of tap water, washing and rinsing my hair. A capful of ACV poured over and massaged through, I can comb through mostly without tangles. Yes, my hair is growing back curlier, thicker and healthier than ever.
The moisturizers I use have great exfoliating properties that I can maintain easily with just a skin brush or damp wash cloth using only treated water. Any other personal hygiene issues are addressed with Witch Hazel. I've even heard a couple of compliments of how 'nice' I smell.
Now I'm researching flax seed and mallow root detanglers since a friend asked me about it and for those who need help in that department and would like to make a bottle, can find lots of easy tutorials on YT.