What should women do if there is thinning hair all over the scalp and hair replacement surgery is not suitable?
Female hair loss is a bit more complicated since there are a number of things other than genetics that can cause it. Have you been to a dermatologist to determine the reason for your condition? In my opinion, this is a crucial step. In many cases, as in cases of thinning hair all over the scalp (typically indicative of a hair loss referred to diffuse alopecia), hair growth can return to normal once the condition causing it is found and treated. Typical causes of diffuse alopecia include hormonal changes in the body, a thyroid condition, an iron deficiency, some medications such as anticoagulants, retinoids (including too much Vitamin A), and scalp conditions such as dermatitus or psorasis. Many of these conditions can be treated and in many cases, baldness reversed.
In my opinion, consult with a dermatologist who can analyze your scalp and perform a series of test to determine the cause of your condition. Only then can a proper hair loss treatment be recommended.