Could be something to do with sulphite suplphite bonds? (That's what causes curls - you get a S=S trple bond or something in the hair.) Not sure how it could occur? maybe Sulphite is more likely to occur with skin deoxygenation?. I only have A level chem so can only guess - wiill ask some people..

Also, my hair has changed as well - it's not as red as it used to be and has now gone strawberry blonde, it also falls out REALLY easily.. nails - don't even go there.....

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