Some of the important remedies are mentioned here in the Remedy resonance for Alopecia. A homeopath will find the remedy that fits your symptoms. Do not try to self medicate.
There are many other remedies that can be indicated in Alopecia. That is the beauty of Homeopathy, there is a remedy that will match your particular symptom.
Natrum muriaticum: Hair falls out easily. It falls when touched or combed. This is frequently seen in Nursing mothers.
Carbo vegetabilis: Hair falling especially after child birth, or severe illness.
Sepia: Hair fall after chronic headaches.
Graphites: Bald spots on the sides of the head.
Silicea: Premature alopecia.
Acidum flouricum: Hair from from premature aging. Hair fall in patches.
Selenium met: Baldness of the whole head, eyebrows, eyelashes and other parts of the body.