Abstract: A hair-straightening brush comprising a base and a plurality of pairs of heated surfaces positioned along the base closely together to tightly engage user's hair therebetween to modify structure of the hair from curly to straight by moving the brush along the engaged hair. The heated surfaces may be defined by heated filaments extending from the base and operatively connected to a heating element within the brush. In some embodiments, the heated surfaces are defined by heated strips extended from the base and operatively connected to a heating element within the brush.