The Natural Soap Making Book for Beginners: Do-It-Yourself Soaps Using All-Natural Herbs, Spices, and Essential Oils

by Kelly Cable

A safe dilution rate for topical application is 2 percent for daily use for adults (12 drops of essential oil to 1 ounce of carrier oil), 1 percent for elderly (6 drops per ounce), or 0.5 percent (3 drops per ounce) for children.