Goldwell’s dry hair oil was a strong smoother and the top shine booster in the GH Beauty Lab’s anti-frizz styler test. “It actually works — and wasn’t greasy!” a tester raved. Hair was “very shiny” and “never frizzy over many uses,” others said. The oil blocked frizz on hair samples in the Lab’s test and tied for #1 at keeping users’ hair frizz-free all day.