Good nutrition and healthy lifestyle are important for healthy hair. The right balance of food is important. Just as you must get enough of proteins so should you also eat carbs and dietary fats. However, apart from nutrition, good care of the hair is imperative.
Here are some tips on how to keep your hair looking good and healthy. These are tips recommended by experts:

Ensure your food includes vitamin B, C and E. Avoid fatty and oily food Give your scalp a good massage with some warmed-up almond oil…. Thrice a week.
Be sure that the shampoo you are using is the right type. Use a mild shampoo.
Apply conditioner after shampooing your hair. This gives your hair a more intense kind of nourishing treatment. It protects hair from dryness, making it smooth and easier to manage.
Before going to bed, brush your hair.
Do not over blow-dry your hair…. It will make your hair dry.
If you color your hair, then use the right kind of shampoo and conditioner to avoid your hair turning dry and brittle.
Have your hair trimmed once a week to avoid split ends.
And last, but definitely, not the least, live a stressful life.

If you can think of more tips, please share with this forum.