- The By Lise fragrance diffuser is easy to use. -Place the bottle on a flat surface and arrange the 10 rattan stems inside the bottle. - The stems will then become impregnated with fragrance and diffuse delicately and continuously for several weeks, so your home will be perfumed with a sweet scent.-Lasts approximately 3 to 4 weeks Olfactory family: Floral Top notes: Hawthorn Middle notes: Violet Base notes: Heliotrope