The part growing under your skin is alive, but what you can see on top isn't. The type of hair you have comes from your parents.
Hair can be black, straight, curly or wavy.
Everybody's is different and you can have fun changing the style. It's important to look after your hair. If you don't wash it regularly the glands under the skin can make too much oil and your hair gets greasy. Hair can also collect dust and dirt so shampoo it at least twice a week to keep it clean and healthy. Sometimes hair looks so good that little insects called head lice think it would make a nice place to raise a family.