I have not found much info on this particular aspect of CFS/MCS but its something I'd like to know if many others have had to deal with this. I have noticed I feel better after I get a haircut. I have noticed this phenomenon now since I first started feeling unwell in my late teens and I am sure part of the reason why my grades fell at the time was because I grew my hair long. When I say I feel better it means...I feel more positive, have more energy, have reduced brain fog, head seems cooler, pickup in appetite, pickup in libido, food intolerances don't seem so bad, I look healthier (slight weight gain + reduced dark circles under eyes). Just simply saying I feel better from getting a hair cut sounds ridiculous on the face of it, as there is no psychological reason for the change in health, so I can only surmise that it is because I have less hair on my head so less shampoo residue on my head, but I want to hear what others say. I knew from past experience that I had trouble with shampoo. Many years back I used to just use whatever cheap shampoo from the supermarket. After seeing an allergist and finding out about chemical sensitivities, I changed to low allergy shampoo and noticed immediate difference in brain fog. I still found though that if I used a low allergy shampoo for while (couple of months) that when I switched to another shampoo that my health would pickup for a week, so it was like I was even becoming sensitive to the low allergy (baby formula) shampoos...and of course the fact I feel better after a haircut as just another element of this. Its crazy. Years back, I did try using beer + eggs (cant remember exact ingredients) as substitute for shampoo but I noticed no difference. Over the years on and off I used a 2nd hair wash using backing soda and I think this helped with reduced brain fog, but it was not good for my hair. Anyway my hair is fairly short now..say 2-4cm in length. The ultimate answer would be to shave my head and I would love to do that to remove this element from my life, but the bald look would definitely not suit me, as I am thin build & underweight, so I would end up with the POW look. so my hair is short already + I use low fragrance shampoos already + I swap the 5 I use around every few days to minimise becoming too sensitive to them, and I don't often use conditioners as well because they seemed to be worse because they coated the hair, so I am not sure what else to do. Even the no fragrance ones smell for me after using them for a while. I tried a shampoo made out of hemp oil instead of coconut oil and that was okay for a while but no breakthrough a it had a fragrance. I had tried shampoo without lauryl sulphate / sodium laureth sulfate I thought (very hard to find). Can anyone relate to this? and if so were you able to remove this sensitivity from your life without going bald.