There are a lot of products which are great for growth, some need time for you to see the results, if you have more severe scalp problems than thinning hairline, you may need to see a doctor, other than that, check out a list of good products for hair growth (there are loads more but that will take up more than just one post, there will be more I promise)
Products great for European Hair, I have heard fantastic reviews about both products, though some say that the growth can be slow, it still is worth it
1. La Science Anti hair loss Serum
2. Intragen Cosmetic trichology
PS please remember that each product has a different effect on individuals, be sure to follow the guidelines given by the manufacturers.