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¹Vs ghd original. Results measured by shine on brunette hair compared to naturally dried, lab test.
²Extreme heat damage is a fractional wet tensile strength reduction per cycle above 0.005, measured over at least 100 cycles on brown Caucasian hair (a “Strength Reduction”)
³No thermal hair damage detected after 100 cycles of 4 passes on thoroughly towel-dried hair.
⁴Technical testing, 2019, vs naturally dried hair