Inhale calm, exhale stress — the Relax, Refresh, Renew Diffuser Stone from the Quiet Moments collection is a purposefully curated diffuser designed from earthenware. This white diffuser is a great self-care gift for sister, friend or anyone. How to use: set the diffuser on any surface and pour 2-3 drops of essential oils on top of the diffuser. Over a few days, the oil will evaporate and you can use 2-3 drops of a new sent. Essential oils are sold separately.