Rose water is essentially a byproduct of rose essential oil making. When the roses are being distilled for their oils, it’s the water that is left behind. This water is called rose hydrosol or rose floral water. The best hydrosols don’t actually come from making rose essential oil though. The best hydrosols will come from distillers who are actually making just the hydrosol, not just using the “byproduct” produced from making rose essential oil.
But don’t let the word “byproduct” scare you! Rose water, whether it’s a byproduct or made intentionally, is fantastic for all skin types.