Frequently seen in perfume shops and used for testing lots of perfumes without putting the directly onto the skin. They are most useful for getting to know oils and absolutes or a blend as it changes over time.

Some oils like sandalwood, patchouli and myrrh will last for days on a strip but almost all of them change over time.

By following a blend that we are` working on and seeing how it changes over time we can get clues that inform our blending. It is all about proportion.