When your Barr Co diffuser runs out of oil, it is nice to just be able to refill the oil and not have to purchase a whole new diffuser set. This oil refill comes in an amber glass bottle, which is shatterproof for safe delivery, and the amber glass keeps the oil protected from light until use, maintaining the integrity of the scent, as it was imagined by the designers at Barr Co. And speaking of fragrance, this one is the original. And you know that means it is good! It is dreamy smooth, blending milk, oatmeal, vanilla, and vetiver. The result is tranquil and comforting, but also stirring and sweetly seductive. It is a study in contrast, a delicate balance of classic, romantic, and powdery virtue with undertones of sweet and indulgent seduction. The refill comes with 8 ounces of oil. Made in the USA by Barr Co, a division of K. Hall Studios.