What is a hydrosol?
After steam or water distillation of an essential oil, the leftover water from the distillation is called a hydrosol. Hydrosols are mostly water with the water soluble components of the plant not found in the essential oil. They usually contain a very tiny bit of essential oil —at least enough to give the hydrosol the faint aroma of the oil. They are considered great additions to skin toners and sprays, masks and lotions where they are valued for their astringent, soothing and rejuvenating qualities. Because they are almost all water, they are can be used directly on the skin without dilution.
