¹ no thermal hair damage detected after 100 cycles of 4 passes on thoroughly towel-dried hair.
² technical testing vs naturally dried hair, dependent on consumer use
³ consumer testing, 148 women, July 2023.
⁴ technical test in a lab on brunette hair, measured vs naturally dried hair
⁵ at high humidity, vs ghd helios & brush
⁶ vs naturally dried hair