I've only just caught up with this and thought my recent experience may help. Like most things, there are a variety of reasons for thinning hair and I plucked up courage to go to a Trichologist to see if something could be done about mine. It is getting noticeably worse and is in effect a receding from the front problem - I have also lost my eyebrows too so I don't share the experience of others who are suffering from excessive bodily hair growth! I had tried various things including Biotin to no avail. The person I saw diagnosed frontal fibrosing alopecia which is in effect an infection that causes hair roots to die. She said it was virtually unknown until a recent explosion and they are working to understand what causes it. One theory is it is linked to the menopause but also likely is the impact of SPF being put into make-up, sun tan creams etc. I was advised to steer clear of these and now look closely to see where it is added. So I guess that for some a shampoo/ vitamins etc work, depending on the diagnosis. She also said I have probably had it for 10 years or more but am only now noticing it and it could have been triggered by anything. I am trying to graciously accept what is happening as there seems to be little that can be done! I hope this helps
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