Apply a few drops of castor oil, or the mixture you created with it, all over your hair 4 to 8 hours before washing your hair to give it time to penetrate. Stay away from coconut oil. Castor oil looks pale yellow in colour and is made from the castor beans. Apart from being used for hair and skin, the castor oil is also used as a laxative for various health benefits.Beauticians and dermatologists have been recommending castor oil for hair and skin.It is a natural product and is known to enhance the growth of hair. When it comes to using castor oil as a hair treatment, one of the most popular varieties is Jamaican black castor oil. Another nugget of wisdom from Rexha for bleach blondes? Using castor oil for hair is a natural and easy way to revitalize your locks and protect your hair from damage when used properly. And try to minimize the amount of heat you put to your hair. Castor oil is a very effective remedy for your hair health, and it … I usually do a pre-shampoo treatment before going to bed and then wash my hair … Ever since the castor oil hair challenge made waves in 2014, I've included this thick oil — made from castor beans — in many of my hair potions. Made with roasted castor beans (and the ash produced by the roasting process), Jamaican black castor oil is said to be especially beneficial to those with thick, dry, and/or coarse hair.