Onion hair oil is being used by many to take care of all kinds of hair related issues. It is considered to be a miracle in a bottle for your mane. Onion hair oil gives your crowning glory the tender loving care it deserves and lets it thrive to become stronger, thicker and smoother. Here's how red onion hair oil can be extremely beneficial for your hair. We also give you a simple recipe to make onion hair oil at home.