Aloeswood is the most expensive botanical I can think of off hand, and its essential oil is one of the most expensive on the market. Because we wanted to keep prices reasonable, this is a 5% dilution in high-quality carrier oil. The resulting oil is still dark and strongly scented, owing to the incredible thickness and strength of the pure oil; the strength is comparable to undiluted sandalwood oil.
Aloeswood is a sacred and holy wood, and its oil is no different. When worn, the oil induces receptivity while also energizing. It therefore makes an excellent oil to use before magical workings, especially those that involve deep trance possession, such as deity aspecting.