Here’s a stupidly simple test: fill a glass with tap water and another with vapour distilled. Add a drop of soap to both. The distilled water will create fewer suds (bathtub science!) because it has no mineral to help the bubbles cling. It feels almost… slick? That’s how unnaturally perfect this water is. Your hair feels like silk after a wash with it—then it gets greasy fast because your scalp rebels against the lack of minerals.
So yes, you can wash your face with it, but I warn you: you might float away in sheer purity.