Essential oils are highly concentrated and often too strong to use directly on the skin. It's commonly recommended that a carrier oil be used to mix with the oil before applying it to the skin. This is can be a bit complicated to know what amount of carrier oil to add. Our RTU blends take the guesswork out of it and are pre-mixed with a carrier oil that works with the blend to make it even more effective! Introducing our Ready-To-Use Essential Oil Blends. These blends are carefully premixed with the ideal carrier oil to complement and support the benefits of each blend. Safe, convenient, and effective—just apply and enjoy.