A flameless, ceramic diffuser, Downlights Aroma Stones can be hung anywhere in your home - in kids bedrooms, on your Christmas tree, or in closed spaces and will create a beautiful long-lasting fragrance. Simply place 3 - 5 drops of the essential oil provided directly onto your Downlights Aroma Stone. The ceramic will absorb the oil and slowly release it as a subtle fragrance that will last up to two weeks. Reapply as needed to reinvigorate your Downlights Aroma Stone. For larger spaces or if you prefer a stronger scent reapply oil after one week or hang additional aroma stones. Once your initial fragrance has evaporated, different essential oils can be used on the same stone.