Check What You Eat

It has already been discussed that diet plays an important role for the growth of healthy and lustrous hair. It is very important that you nourish them from outside as well as inside.

A well balanced diet for healthy skin and hair should consist of fresh fruits and vegetables and should be followed religiously. Include nutrients such as Vitamin B12, zinc, iron and calcium as they prevent hair loss. You know that our hair is composed of keratin a protein, so have a protein rich diet which consists of soybean, cheese, milk, fish, chicken etc. Stay away from that junk and processed food as it inhibits hair growth. So what you eat is the answer to how to increase hair growth.
Here is a detailed article onfoods that help hair growth.