From your customers point of view Massage Oils make excellent sense because to buy each of the individual oils to mix their own is expensive and time consuming.
Your Peppermint Fresh  Massage Oil is made with worlds known Ancient Wisdom quality Peppermint, Tea Tree and Eucaliptus Essential Oils and Pure Grapeseed Oil.
These Massage Oils are blended in Grape Seed Oil. You can even add a few drops to the bath.