Hydrosols are the waters left after the distillation process.  They contain the wonderful therapeutic benefits, although on a much less and gentler scale than essential oils.  There are many ways you can use your hydrosols from body sprays to cool down, add to your water based-products, use in your bath water or spritz your face after washing.  They can be very healing to the skin.  After washing, air dry your face, spritz your face with your favorite hydrosol then apply your facial products as usual.   Within a week, you'll feel and love the difference.  Our Rose is Rose Otto damascena and Lavender Lavendula angustifolia. 
In some cases, there are safety issues that should be noted.  Spritz on arm and wait a bit to ensure no reaction; which is rare.  Hydrosols can be combined with distilled water to avoid any possible skin sensitization.  For more information on hydrosols, uses and safety, check out Hydrosol Profiles, Uses, Properties and Benefits | AromaWeb   4 ounces