Car diffusers are to be hung in your rear-view mirror- they disperse scent through the wooden lid that acts as a reed. Every time you tip your diffuser to soak the reed with more oil more scent gets dispersed. High quality 7.5 ml glass car diffuser perfume bottle WARNING: This bottle is filled with concentrated fragrance oil. Use carefully. If dripped onto surfaces - it can cause damage. If on your hands, avoid touching your face & wash your hands Immediately. Woodsy Wicks, and its owner are not responsible for any damage caused by this product. By purchasing this product, you agree to take full responsibility. Failure to follow these instructions may result in damage to some surfaces. Wipe all spills immediately and keep out of reach of children and pets! Holiday scents