Hydrosols

A hydrosol is the aromatic water that remains after steam-distilling or hydro-distilling botanical material such as lavender. 

The plant matter used in the distillation process imparts the hydrosol with the water-soluble aromatic and therapeutic properties of the plant.

Unlike essential oils that should be diluted prior to application to the skin, hydrosols are much gentler than their essential oil counterparts and can generally be used directly on the skin without further dilution.