- Ceramic Straightening Comb, 6-Stage Temperature Adjustment Negative Ion Hair Care. - 6 levels of temperature adjustment, adapt to different hair types, provide the softness you want and make your hair shine. - Ceramic sandwich design, outer tooth comb, the temperature is only 50, to prevent burns, inner comb at , quick straightening. - Function: negative ion hair care, fast straightening, constant temperature design, 30 seconds rapid heating, anti-scalding design, 6-level temperature adjustment.