To Do it yourself your personal diluted rosemary oil hair treatment, Dr. Doyle recommends mixing two tablespoons of your carrier oil of selection (she recommends jojoba) with two to 3 drops of rosemary oil. Use the mixture to the scalp and “leave on for one hour before washing,” Doyle provides. https://andresvjllp.csublogs.com/33181689/ouai-hair-oil-reviews-an-overview