Hey Eva B.
Organic Food Store do have an Nettle Essence that stimulates hair growth. Whilst we all have to make do with what kind of hair nature gave us, your hair quality also reflects what "fuel" you give your body, so also look at your nutrition. This made a huge difference in my case...
Hi Eva B. I don't have fine hair but Dubai took a huge toll on it and it was falling out in handfuls. And fearing I would soon be bald I decided to go down the vitamin route. I now take 21st Century Hair, Skin and Nails dietary supplement, two a day. It took about a month to see any noticeable change but it has totally stopped my hairfall. I pick this brand up in Spinneys but there are lots of other brands such as Perfectil. HTH :)