All of our stunning necklaces have natural volcanic beads on them to hold your favourite essential oils. Volcanic beads are porous and therefore will absorb your essential oils and hold their scent. To clean your essential oil off the beads and prepare for your next favourite oil, hold the beads in a bowl of warm salty water and gently roll them around with your fingers until they feel clean of the oil. You may use a mild detergent in the warm water if you do not find the heavier oils are coming off the beads. Pat dry with a paper towel then allow the beads to finish air drying for approximately 1 hour before adding your next favourite essential oil.