Rosewood oil is over four fifths linalool, which is the compound behind lavender's softness. That makes it floral and woody at once, gentle in a way few oils manage. In lab tests it held back Staphylococcus aureus, E. coli and Candida.^[1] Given to rodents it slowed the heart, lowered blood pressure and lengthened sleep.^[2] The tree is listed as vulnerable after decades of Amazonian logging, so only certified plantation oil is a responsible buy.