In terms of hair not liking alkaline...our bodies are not alkaline either, so it would be better for our skin not to use soap either, unless it could be a ph balanced soap, right? Our hair is part of our body, so I would think that it would have and like the same ph. How can we make ph balance soap?
Our skin is alive and constantly turning over, it can correct any PH imbalance from using soap, usually within just a few minutes.
Hair is dead and the high PH causes damage that can't be corrected/healed. Using a acidic rinse will help a little but that damage is still there.
I used CP shampoo for almost two years. I loved it (genny's recipe) Tried to get my family to all switch and told anyone who asked, they they should ditch traditional shampoo and switch to CP bars.
Sometime early 2015 my hair started acting weird, the ends seemed crunchy and it tangled so bad I could hardly brush it. It kept getting worse until I had 1" long chunks breaking off every time I touched it. I switched to sulfate free shampoo and cond but it was too late, my hair had finally reached its breaking point (literally) and I had to cut it all off, down to 1".
Since then, I've used my CP a couple times on my hair but its just not worth it. I liked the idea of using my own CP shampoo but I had to give in and admit that its just not good for hair. I do still use a sulfate free shampoo, I don't want harsh cleansers on my scalp due to a skin condition.
If I had short hair, I would have kept using my bars but I want my long hair back. Moral of the story, hair can take a long time before showing extreme damage. If you hair starts getting dry or excessively tangling, stop with the shampoo bars and moisturise the heck out of it.