Have you ever noticed that some women have hair that is just long and thick and shiny? While some may come about this hair naturally, it is likely many people come about their healthy hair with the use of hair growth oil. Hair growth oil is a treatment that is applied nightly and is shown to improve the quality of your hair. Many people wonder how it works. In an effort to help you feel more confident about purchasing your own bottle of hair growth oil, here is some additional information to put your mind at ease.