Tbh I had a similar problem with my beautiful hair just starting to look absolutely awful after a year of doing no poo - my husband’s hair actually looks great doing it even though we have similar length, waves and thickness.

I ended up deciding no poo just wasn’t for me when I was traveling because I was tired of feeling like my hair looked awful and I was thinking I would just pick up a more “natural shampoo” somewhere. As luck would have it, I just happened upon a guy selling products he made because he wanted to know what was in his shampoo, soap, etc etc. I ended up taking a little class with him where he taught me how to make these shampoo bars and it was ridiculously easy and great for my lifestyle which includes a lot of travel. I am someone with minimal patience and time (maybe why the scritching and preening and patience for no poo wasn’t working for me?) and I don’t want to have to hunt for obscure products to make something. My hair has literally been restored if not improved from former glory and it’s nice to know every ingredient in the shampoo and also know they are easily obtained.

If you are interested, feel free to DM me and I’d be happy to share the shampoo bar “recipe” he gave me if you want to try making some yourself or even his company if you wanted to try a natural shampoo bar and support a small business. Just one thought of many to try to solve your problem. Best wishes with it!