Combine two tablespoons each of onion juice and coconut oil. You can add a few drops of tea tree oil to the mix if you have dandruff. Once you've combined all the ingredients, apply it all over your scalp. While the onion juice works to nourish your scalp, coconut oil has antibacterial properties that help to protect your hair and scalp. Leave this mixture on for at least 30 minutes before washing it off well with a cleansing shampoo.

Mix together two tablespoons each of castor oil and onion juice. Massage the blend well all over the scalp in circular motions. Leave it on for at least an hour. The beneficial properties found in both ingredients work together to boost hair growth. It will also reduce hair fall. Regularly using this treatment will help you achieve shiny and smooth hair in no time.

For this mixture, you will need three tablespoons of onion juice and two tablespoons of olive oil. Olive oil contains dandruff-fighting properties and works to condition your hair and scalp. The onion juice contains properties to boost hair growth. Leave this treatment on your hair for at least two hours. So this formula is perfect to try on the weekend when you have the time. Wash it well with a mild shampoo.