Have been thinking of stopping using shampoo and using baking soda instead. However, in reading a blog post about it, a commenter mentioned that it won't work if you have hard water (which I do).
I'm not sure it would work. I don't have soft water, but its not really hard either and I can do no poo just fine. Although I switched to using dr bronners liquid castile soap to wash my hair and face and thing were great. However when I went home for the holidays to my mom's VERY hard water, my skin and hair got really gross. I finally had to change up my routine because I seriously didn't feel clean.
i've never done the bs/acv in hard water long term though so this is just me guessing. bs/acv works equally to dr bronners for my hair at home so I figure it would translate similarly to the hard water at my mom's.
We have really hard water (drives me crazy, leaves a film on all our drinking glasses and such) and I changed how I shampoo back in early November. I use shampoo once a week (Avalon organics because its what I had) and water only the rest of the week. It has been working well for me. I've tried a baking soda wash/ACV rinse a couple times and it makes things worse than water only. This week when I start to get icky feeling, I'm going to try just ACV and leave it on for a bit and see how that goes. I think I've gotten past the greasy point and its just the hard water making it icky because my hair is back to its normal color.
i havent had luck with BS and ACV in our hard water.
i get the same white gunk on my scalp too. dr. bronners seems to work. i have also had some luck using aubrey organics shampoo and conditioner.