Frequent Questions: How to Determine How Much Perfume is Left in my Opaque Bottle?

You all know the pain...Your otherwise beautiful opaque perfume bottle, often in inky shades of black or purple which spell danger or just in a material inpenetrable by the light (such as opaline, Cloisonné metal or china or reverse painted from inside glass, such as in Chinese snuff bottles), is refusing to let you gauge how much of the beautiful fragrance you so enjoy is left in it.Consider