I've been fine with it for a long time, including as a washing-up liquid. Bio-D are a well-respected company, and
this is their 'philosophy'.
Yes - it may well be that skin and hair problems arise from our general inflammation, and that this probably changes over time so that we become sensitive to things we were OK with before. But I have tried two or three natural shampoos since getting this scalp problem, and have had no success. I've spent a lot of time looking at reviews to try to find something likely to help - no luck.
I've decided to buy some biotin, and will start low and see how things go.