Finely-textured hair is genetic - one is simply born with it. If you have enough of it, there is nothing to be concerned about. In fact, fine hair is usually more elastic and shinier than coarse hair. The difficulty is fine and sparse hair. In such cases, oil and perspiration spread through the hair while you're sleeping so the hair is often flat in the morning. The style loses shape and develops an oily appearance. Plus, perspiration can have a harmful effect on the scalp and hair growth. The solution is simple: frequent shampooing and a program of strengthening treatments.