Skin Care Products

I have quite soft hair which appears to be thinning on top and around the fringe. I don’t brush too often, and don’t use styling products (apart from when I go out).
Is there anything I can do (ie diet, exercise etc) to encourage growth and thicker, healthier hair?

Yes…yes they shall take care of their skin as well. There are some fab cosmetics products for men. Do you know of any good ones? Let me know and will recommend further.

It may sound silly but I know an area of skin is going to need to stretch and I want to encourage it to do so. Will stretch mark cream help with this or does anyone know of a cream/lotion/oil that might help?