You are teenager and your some hairs greying from the roots upto half .please tell how to control it get back black hair?

Premature graying of hair, also known as canities, can be concerning, especially for teenagers. While it's not always possible to completely reverse the process, there are some things you can try to control it and potentially regain some of your natural hair color.

1. Avoid chemical treatments: Hair coloring, bleaching, and other chemical treatments can damage your hair and make it more prone to graying. If possible, avoid these treatments or limit their use.

2. Maintain a healthy diet: Eating a balanced diet rich in vitamins, minerals, and antioxidants can support healthy hair growth and prevent premature graying. Make sure to include plenty of fruits, vegetables, whole grains, and lean proteins in your diet.

3. Reduce stress: Chronic stress can contribute to premature graying. Try to find healthy ways to manage stress, such as exercise, meditation, or spending time with loved ones.

4. Quit smoking: Smoking can damage your hair follicles and accelerate the graying process. If you smoke, quitting can improve the overall health of your hair and potentially slow down graying.

5. Natural hair care remedies: Some natural remedies have been suggested to help control graying hair, although their effectiveness may vary from person to person. These include applying coconut oil, henna, amla oil, or curry leaves to your hair.

6. Consult a dermatologist: If you are concerned about premature graying, consider consulting a dermatologist. They can assess the underlying cause and recommend appropriate treatment options.

Remember that gray hair is a natural part of aging, and it's not always possible to completely reverse the process. However, by following these tips, you may be able to slow down graying and maintain healthy hair.