Add this refill to your existing M&S Apothecary diffuser to release the scent of M&S' Sleep fragrance and relax the senses. The 230ml bottle contains at least two standard-sized refills. The blend includes essential oils of lavender, eucalyptus, vetiver and jasmine, all known for their restful qualities. This fragrance is part of the Herbal family of fragrances. Herbal scents are often considered to have soothing and relaxing qualities and may contain notes such as lavender, cedar wood, vetiver or eucalyptus.