Many people have what are called "hotspots" on their scalp that will become bald during times of heavy stress. For some they are no larger than a dime, for others they can be larger & quite noticeable depending on how the hair is cut & worn, becoming one more source of rather intense worry.
Evening Primrose is reputed to be an excellent remedy for some types of baldness & is nourishing for the scalp. To restore hair growth & protect "hotspots," gently massage a small amount of the oil in the bare scalp daily. You can buy the oil by the ounce, or in capsule form from good natural food markets. (Simply pierce capsules with a pin & squeeze to obtain oil. One capsule is usually more than enough.)
To help maintain healthy hair growth, you can also add a small amount of Evening Primrose Oil to your shampoo. One-quarter teaspoon per 8 ounces is good, any more will make your hair difficult to rinse as the oil is heavy & rather sticky.