*whistles like my grandpa used to* LOL I wish I looked as good when I was 29... Hair n all haha. I know I've said it somewhere that my hair likes syndets but my scalp doesn't, and my scalp likes lye based shampoo but my hair doesn't. I have tried both lye shampoo and syndets with and without coconut oil and the results are the same as stated above. Testing has taken its toll on both my scalp n my hair and I'm still not entirely happy with the one I've settled for now. Of course, it could also be many other factors.. Age, nutrition, sleep, environmental changes, etc.. @melinda48 was your customer asking for commercially available products or asking you to make shampoo for her? Did she want a solid one? I am sure there are lots of shampoos out there without coconut oil though I can't say what could be available to you/her - - - apparently there aren't so many completely coconut free Edited above and to add: I realized I focused only on coconut oil and only now remembered that a lot of syndets use coconut derived surfactants, which could be a problem also. I tried trusty ole Google and this brand seems to pop up often enough. I'm still reading ingredients lists but the Pine Shale one seems to be coconut free. This one is also coconut free but they're in the UK. These are labeled as hair washes and the first two are coconut free, not done reading yet.