People say gray hair is a part and parcel of old age, because the hair pigment called melanin reduces production with age. But, you can do a lot to prevent premature graying if you know how. You must take care of your hair properly and eat all the nutritiously rich food for hair, as soon as you see your first gray hair, or even before that, and definitely after that.
Are you wondering what is nutritiously rich hair food? Its vitamins, like Vitamin A, but mainly Vitamin B complex; minerals such as iron, zinc and iodine; and protein. But it's not enough to take this, if half the time you are eating junk food rich in salt and sugar! To get these important ingredients, all you've to do is make sure you eat lots of raw vegetables fruits, seeds and nuts. The foods that'll help the most is carrots, leafy greens, tomatoes bananas, dried apricots sesame seeds, sunflower seeds, cashews, almonds and also brown rice. Brown rice is especially filled with Vitamin B.

Here are some home remedies for gray hair.
Get some powdered sage, botanical name is Salvia officinalis. Take two teaspoons of powdered sage, and boil in a cup of water. Strain and apply onto your hair. You will see results in about three months.
The Indian gooseberry or Amla, is well-known for its beneficial qualities for hair growth. It is also one of the home remedies for gray hair that has been used for centuries. You can cut the fruit into tiny pieces, or you can use the Amla powder that you can get at Indian grocery shops. Boil some coconut oil and put in the Amla pieces or powder, and let the oil burn the Amla black. As a result the oil will be black. Every night mix a teaspoon of this oil with some lemon or lime juice and a little almond oil, and leave overnight. Wash off the next day with very mild shampoo.
Curry leaves are one of the excellent home remedies for black hair. Some people also swear that it re-pigments gray hair. There are no lab studies. If you want to know if it's true, test it yourself. You can eat the curry leaves in the curries or mix it with dilute yoghurt with a bit of salt, and drink it. You can also make oil with it by boiling curry leaves, in coconut oil till the leaves burn. Apply this oil.
But if you've many gray hairs, henna is one of the ideal home remedies for gray hair. It can be a messy job, so wear gloves. Mix henna with a little bit of very strong tea, some lemon juice, half a lemon and some amla powder. Mix it with a little bit of water and make a paste. Brush it onto your hair, and leave it for at least an hour and a half. If you want it to repair your hair, add an egg, but it's optional. It'll not make your hair darker.
The important thing is you've to be consistent in whatever remedy you want to use, so that you will give it a chance, to show you what it can do for your gray hair. Use at least one of the home remedies for gray hair for some time and see how hair your fares.