The phrase " raw Vietnamese hair " gets thrown around constantly in the extension industry — but very few sellers actually explain what it means. What is raw Vietnamese hair, technically speaking? It is single-donor human hair in its most natural state: no perming, no relaxing, no bleaching, and no cuticle stripping. Every strand runs root to tip in perfect alignment, which is what gives it that signature smoothness, reduced tangling, and exceptional longevity. Sourced from n