Study Buddy DIY Recipe BundleOur back to school bundle includes four of the most effective essential oils for increasing focus and attention Rosemary, Peppermint, Grapefruit, and Cedarwood. Add an AromaPearl tabletop diffuser in either black or white to help your kids get the most out of each study session. You can follow our recipe or adjust to suit your preferences! We like using 7 drops Rosemary, 4 drops Peppermint, 4 drops Grapefruit, and 3 drops Cedarwood.