To all, my hair is thinning on top of my head, while the sides are good and thick. I have never tried any type of hair growth shampoo/foam/gel etc. Is there actually anything that REALLY WORKS to get your hair to regrow on the top of your head? I am not looking for hair plugs or any of that medically invasive stuff, but if there is a good foam treatment or something like that which will actually work, I am all for giving it a try. Thanks for any advice on this.