GWAN Aroma Diffuser Oil/Essential oil for home fragrance/essential oil diffuser (Lemon Grass, Lavender, Jasmine, Rose, Sandal Wood), 10ml Each - Set of 5 Aroma diffuser oil, also known as essential oil, is a concentrated, highly fragrant liquid extracted from various parts of plants, such as leaves, stems, flowers, and roots. These oils are commonly used in aromatherapy, home fragrance diffusers, and other applications to add pleasant scents to the environment and potentially offer therapeutic benefits. Aroma diffuser oils come in a wide range of scents, each with its own unique fragrance and properties.