I think the irritation from shampoo, at least for me, stemmed from an allergy to sodium laureth sulfates. I occasionally use an SLS-free shampoo now and my s.d. got better when I quit using SLS, but that was in conjunction with a lot of other things such as cassia. I have read other people on here recommending C.O. but it's good to know it doesn't work for everyone! Sometimes I imagine that everyone on LHC is CO, but that's obviously not true... I admit I am projecting a little.
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