Rosemoore Vanilla Creme Reed DiffuserOverview The pack should last approximately 2. 5 months from the time its opened, which includes natural bamboo reeds, a bottle collar and a clear glass bottle filled with diffuser oil. Remove the stopper from the bottle, replacing it with the white collar, then insert the reeds into the diffuser oil, to activate the fragrance. The fragrant diffuser oil is absorbed by the reeds, which need to be turned over after one hour so that the other side can