I sell the doTerra line of essential oils. I have a variety in the store, or you can order online.
There is a reason I use doTERRA oils and not other brands.
dōTERRA (CPTG) Certified Pure Therapeutic Grade® essential oils represent the safest, purest, and most beneficial essential oils available today. They are gently and skillfully distilled from plants that have been patiently harvested at the perfect moment by experienced growers from around the world for ideal extract composition and efficacy. Experienced essential oil users will immediately recognize dōTERRA’s superior quality standard for naturally safe, purely effective therapeutic-grade essential oils.
When you purchase an essential oil in the store, I will give you suggestions on how to use it. But in general, any oil can be applied on the bottoms of the feet. No carrier oil is needed. If you have a question on how to use a specific oil, email me.