At the of 30 my hair and beard become white. Tell me the solution by which both become black soon.

Question

Premature greying of hair can be due to stress, smoking, nutritional deficiency, thyroid disorder, chemical use over hair etc. but most important cause is hereditary factor.

As such nothing much can be done for premature greying esp if it is hereditary or familial. The hair that has turned white would remain so but its progression can be prevented to some extent by taking hair supplements containing calcium pantothenate and PABA. For the same you may take tablet follihair one daily. 
Food rich in proteins (like sprouts, lentils, soy products), vitamin A and B like whole wheat products, green leafy vegetables, carrots, yellow and orange fruits like mangoes, papayas, nuts like sunflower seeds, walnuts, sesame seeds provide minerals like copper which are essential for maintaining hair pigment.

Hope that answers your query. Feel free to write back if having any doubts. 
Regards

Surbhi Agrawal · Accepted Answer

Premature greying of hair can be due to stress, smoking, nutritional deficiency, thyroid disorder, chemical use over hair etc. but most important cause is hereditary factor.

As such nothing much can be done for premature greying esp if it is hereditary or familial. The hair that has turned white would remain so but its progression can be prevented to some extent by taking hair supplements containing calcium pantothenate and PABA. For the same you may take tablet follihair one daily. 
Food rich in proteins (like sprouts, lentils, soy products), vitamin A and B like whole wheat products, green leafy vegetables, carrots, yellow and orange fruits like mangoes, papayas, nuts like sunflower seeds, walnuts, sesame seeds provide minerals like copper which are essential for maintaining hair pigment.

Hope that answers your query. Feel free to write back if having any doubts. 
Regards

Dheeraj Kumar · Answer

Hello, Try these simple remedies:
CURRY LEAVES: Soak a handful of fresh curry leaves in plain water overnight. The next morning chew the curry leaves and follow it up with the water. Curry leaves will promote hair growth and give you that shiny, black and thick hair.
APPLE CIDER VINEGAR: You could give your hair a last rinse using apple cider vinegar concoction. Mix 1 part of ACV with 2 parts of plain water and use it as a final rinse (after shampoo).
OIL MASSAGE: Massaging the scalp with brahmi oil or bhringaraj oil at bedtime can help to prevent hair loss. In addition to the qualities of the oil, the massage itself will improve circulation at the root of the hair, thus bringing more nutrients to support hair growth.
FOOD FOR YOUR HAIR: Healthy hair depends upon a nourishing diet. Dairy products such as cheese, milk, and yogurt are beneficial for the hair (assuming you digest them well), as are fruits, green vegetables and white radish. Drinking tender coconut water is also helpful.
SESAME SEEDS: Eat a handful of white sesame seeds every morning. One handful of these small seeds contains about 1,200 mg. of calcium and magnesium and is a good source of nourishment for your hair.