Scent: Refreshing notes of balsam, pine, and rich cedar, coupled with hints of greens and musk. I put these on the backburner for years, but after constant requests from customers and my own friends and family, here we are! I tested a few different formulations and finally came up with the perfect mixture to use in our car diffusers for long last scent! Our diffusers are designed to last approximately 3-4 weeks depending on how they are utilized. Diffusers come with a plastic stopper under the cap to prevent leakage. They will come sealed in a cellophane bag with instructions.