Evening primrose oil, when massaged along with castor oil, promotes regrowth of hair. You have to be a little patient to get positive results though. You can also make a bottle of homemade concoction of jojoba, flaxseed, basil, horsetail, burdock, and evening primrose oils. All these herbal oils contain ingredients that accentuate the hair growth process. The products can be purchased from any herbal outlet.