All my products are handmade in small batches in my garden workshop in Kent. All the labelling is done by me, so reducing the carbon footprint. The base is a volatile silicone, a compound of silicone and oxygen, and is the same base used in hair silicones.  I use cosmetic grade fragrances, which are thoroughly safety tested, and each mist carries the correct safety information.
A little goes a long way with my mists, so they last a long time. Like with all fragrances, they need to be stored away from sunlight. The bottle needs to be shaken before every use.