A handheld personal care device according to the present disclosure includes: an operation switch configured to change a treatment operation of an operation unit; a sensor electrode configured to cause a change in capacitance depending on whether or not the grip unit is grasped; and a control device electrically connected to the operation switch and the sensor electrode and configured to control the treatment operation of the operation unit. The control device includes: a grasp detector configured to detect that the grip unit is grasped based on a change in capacitance of the sensor electrode; and a change permission part configured to permit the operation switch to change the treatment operation of the operation unit when the change permission part receives, from the grasp detector, grasp information indicating that the grip unit is grasped.

Disclosed is a hair-straightening comb for quick styling, which includes a comb-tooth part and a handle part, the comb-tooth part includes a housing with an inner cavity, a heat-conducting comb body sealingly embedded in the inner cavity, and a heat-generating component fixed on a back side of the comb body; the comb body includes a bottom plate and short comb teeth formed on an outer surface of the bottom plate, and the bottom plate has a plurality of embedding grooves distributed at intervals, a comb-tooth bar is embedded in the embedding groove; the handle part includes an outer casing, and a fan component and an air inlet provided on the outer casing, an air duct communicating with the outer casing is formed between the housing and the comb body, and air outlet holes communicate with the air duct.

Disclosed is a hair-straightening comb for quick styling, which includes a comb-tooth part and a handle part, the comb-tooth part includes a housing with an inner cavity, a heat-conducting comb body sealingly embedded in the inner cavity, and a heat-generating component fixed on a back side of the comb body; the comb body includes a bottom plate and short comb teeth formed on an outer surface of the bottom plate, and the bottom plate has a plurality of embedding grooves distributed at intervals, a comb-tooth bar is embedded in the embedding groove; the handle part includes an outer casing, and a fan component and an air inlet provided on the outer casing, an air duct communicating with the outer casing is formed between the housing and the comb body, and air outlet holes communicate with the air duct.

A hair brush comprising: (a) a handle; (b) a brush body having: (i) a first side; (ii) a second side; (iii) a third side; and (iv) a fourth side that are connected together forming a substantially square shape; and (c) bristles located in a row along each of the first side, the second side, the third side, and the fourth side.

A heated hair brush apparatus. A base plate is disposed at a head portion of a housing and has an upper face and a lower face. A plurality of heating elements each extends from the upper face of the base plate to a terminal end. A heat source is disposed in the compartment for transmitting heat through the heating elements. The heating elements and the base plate define a plurality of bores. A plurality of spacers of a material that has a lower thermal conductivity than the heating elements are each received by one of the bores of the base plate. Each of the spacers taper inwardly along at least a portion of the spacer toward the distal end for wedging the spacer in the bore of the heating element to inhibit movement of the spacer relative to the heating element.

A heated hair brush apparatus. A base plate is disposed at a head portion of a housing and has an upper face and a lower face. A plurality of heating elements each extends from the upper face of the base plate to a terminal end. A heat source is disposed in the compartment for transmitting heat through the heating elements. The heating elements and the base plate define a plurality of bores. A plurality of spacers of a material that has a lower thermal conductivity than the heating elements are each received by one of the bores of the base plate. Each of the spacers taper inwardly along at least a portion of the spacer toward the distal end for wedging the spacer in the bore of the heating element to inhibit movement of the spacer relative to the heating element.

Examples of a hairbrush are presented that comprises a heating plate and a plurality of protruding heating elements. The plurality of heating elements is arranged in a pattern resulting in a plurality of undulating paths such that hair strands pass on top of a face of the heating plate and through the plurality of undulating paths during brushing of the hair. A length of at least two of the heating elements, along at least one of the undulating paths, is larger than a width of the at least some of the heating elements. The hairbrush also includes a plurality of heat insulating spacers extending from the heating plate. At least some of the heat insulating spacers are longer than at least some of the said plurality of heating elements, and a plurality of peripheral heat insulating spacers are disposed around at least a portion of the heating plate.

Examples of a hairbrush are presented that comprises a heating plate and a plurality of protruding heating elements. The plurality of heating elements is arranged in a pattern resulting in a plurality of undulating paths such that hair strands pass on top of a face of the heating plate and through the plurality of undulating paths during brushing of the hair. A length of at least two of the heating elements, along at least one of the undulating paths, is larger than a width of the at least some of the heating elements. The hairbrush also includes a plurality of heat insulating spacers extending from the heating plate. At least some of the heat insulating spacers are longer than at least some of the said plurality of heating elements, and a plurality of peripheral heat insulating spacers are disposed around at least a portion of the heating plate.

A hair brush with: a handle; a brush body having: a first side; a second side; a third side; and a fourth side that are connected together forming a substantially square shape; and bristles located in a row along each of the first side, the second side, the third side, and the fourth side.

A hair styling appliance is described having a first electrode and a second electrode, and a drive unit for applying alternating voltages to the electrodes to heat dielectrically hair located between the electrodes. The drive unit applies a first alternating voltage to the first electrode and a second alternating voltage to the second electrode, and the second alternating voltage is phase shifted relative to the first alternating voltage.