Plug in Aura Cacia USB Essential Oil Diffuser and bring aromatherapy into your everyday space. This simple, portable diffuser uses a quiet fan to diffuse essential oils into your personal space at home or in the office. Select any Aura Cacia 0.5oz essential oil bottle or create your own essential oil blend in the bottle provided. Insert wick, screw on cap and place the bottle into the diffuser and connect to any USB power souce. Gender: unisex.