Before you do anything, one of the first things you should do is stop any treatment methods you may be conducting on your hair. This may mean harsh chemicals or any other thing that may be harmful to your skin and body. Give your hair at least 2 to 4 weeks to rest before you do anything dramatic with it. Next you may like to look into trimming your hair or shaving it off. The reason for this is that it will help promote a new growth of healthy and natural hair.
Safer products to use on your hair are certain types of conditioners. Black hair requires a certain type of conditioner that helps fight the dryness that this hair has. Go for products that have more natural oils like olive and jojoba. This will help put moisture back into your hair.
Another thing that may work is to massage your scalp with your finger. By massaging your scalp you are allowing a circulation of blood to rise, bringing more oxygen to the head. It also has a way of loosening tension and stress which are also some factors of hair loss.
Do not over brush, and avoid washing your hair daily as this may affect the balance of moisture in your hair. Washing every second to third day, or when it feels dirty, can help reduce the loss of natural moisture.
So if you want help to grow black hair, why not take some of these things into consideration, and see if you can get a more natural look that will suit you. You may just surprise yourself.