I have been using a Propoline (Apivita nature products company) hair supplement especially for women the last couple of months.I think that for all hair supplements you have to give them a three-months-period for the effect to kick in, at least that's what I was told. I'll give it this month too and then again during the Fall. The pharmacists who sold them to me told me that it is usually better to stop food supplements during the hot months, (summer is hot here).
That Apivita one I've been using *seems* to work, at least for less shedding. I'll see how it goes during May and I'll report again.

The product is called Propoline - Hair Care System for Women with Brewer's yeast, L-Cystine and Soya Isoflavones.

www.apivita.com