Now you can enjoy your favourite diffuser for even longer and we get to save the planet a little bit! Our refill comes in a recyclable aluminium bottle containing with a new set of reeds, allowing you to top up your diffuser as needed. We use the highest quality fragrance oil in our carrier bases, which have a very low evaporation rate and are non- toxic from a renewable source, cruelty free. Our reeds are black no-flip reeds.