Diy Essential Oil Spray For Hair Growth . We use this aloe, it’s only preservative is small amounts of natural citric acid. Store in a cool, dark and dry place. Easy Rosemary Hair Growth Spray A Beautiful Mess Rosemary hair from www.pinterest.com Instructions combine your two carrier oils of choice in your dropper bottle in a 1:1 ratio. Mix up the essential oils in the witch hazel until well combined. Make sure you buy 100% juice and avoid preservative laden ones.