A hair styling appliance for dual supply voltage operation is described comprising a body having at least one arm bearing a hair styling heater (560), wherein the hair styling heater comprises one or more heater electrodes (630,632,634,636) for heating the hair styling heater. A first power input is connectable to a battery power source (564) and a second power input is connectable to a mains powered source (561). The first power input and the second power input are each coupled to at least one of the one or more heater electrodes. Such a hair styling appliance is useable for styling when coupled to the mains powered source and when coupled to the battery power source increasing the versatility of the appliance.

Apparatus for drying and styling hair, comprising: first and second mutually-opposing arms adapted for movement between an open configuration for receiving a length of wet hair therebetween and a closed configuration adjacent the hair, such that, in use, when the arms are in the closed configuration they form an inter-arm chamber across which the hair passes, and wherein an airflow conduit is provided within and along at least one of the first and second arms; and means for delivering a flow of air along the conduit in the at least one of the first and second arms, and subsequently into the inter-arm chamber. Also provided is a method of drying (and optionally simultaneously styling) hair using such apparatus.

A heater including a ceramic heater element and ceramic heat sink whereby the ceramic heater element and the ceramic heat sink are both formed from a plurality of layers of tape cast ceramic material. The ceramic heater element may be generally planar and extends within a first plane. The ceramic heat sink may extend in a second plane which is orthogonal to the first plane. The ceramic heat sink may include a plurality of fins which may be discrete. The layers of the ceramic heater element may be orientated orthogonal to the layers of the ceramic heat sink. The ceramic heater element may comprise a conductive track which may be surface mounted to a distal side of the ceramic heater element than the ceramic heat sink or embedded within the ceramic heater element.

Methods and apparatus include a hair iron having a ceramic heater between first and second arms movable relative to each other between open and closed positions. The ceramic heater has resistive traces that heat up hair during use upon being connected to a power source. On a side of the ceramic heater opposite the resistive traces, a layer of metal is formed to spread out during use the heat from the resistive traces. The metal may be formed as a single or multiple layers. The composition of the metal can be, representatively, pure or alloys of silver, copper, or aluminum with platinum or palladium. The shape of the metal varies as does its coverage on a surface area of the ceramic heater.

A wireless hair straightener according to an embodiment of the present invention includes a battery charged by an external power supply, a first switch, a first heating resistor, and a second heating resistor which are sequentially connected in series between one end of the external power supply and a ground, a second switch having one end connected to a connection point between the first switch and the first heating resistor and the other end connected to the ground, a third switch having one end connected to a connection point between the first heating resistor and the second heating resistor and the other end connected to one end of the battery, and a control unit that controls on and off operations of the first switch, the second switch, and the third switch, in which the other end of the battery is connected to the ground, and the other end of the external power supply is connected to the ground.

Methods and apparatus include a hair iron having a ceramic heater between first and second arms movable relative to each other between open and closed positions. The ceramic heater has resistive traces that heat up hair during use upon being connected to a power source. On a side of the ceramic heater opposite the resistive traces, a layer of metal is formed to spread out during use the heat from the resistive traces. The metal may be formed as a single or multiple layers. The composition of the metal can be, representatively, pure or alloys of silver, copper, or aluminum with platinum or palladium. The shape of the metal varies as does its coverage on a surface area of the ceramic heater.

Methods and apparatus include a hair iron having a controller and a heater between first and second arms movable relative to each other between open and closed positions. The controller connects or not the heater to a line voltage to heat hair when placed between the arms during use. A proportional-integral-derivative (PID) controller communicates with a thermistor measuring a current temperature of the heater and makes requests of the controller to operate the heater at a setpoint temperature. In various embodiments, the heater heats to full power during warm-up and operates thereafter at lower temperatures based on a reading of the line voltage and a time to adjust the current temperature to the desired setpoint temperature.

According to one embodiment of the current design, there is provided a styling apparatus used to style a user's hair. The apparatus includes a styling arm, a layer of glass positioned on the styling arm, and a film layer deposited or printed on a bottom surface of the layer of glass and positioned between the layer of glass and the styling arm. User hair placed atop the layer of glass is styled using heat passing from the film layer through the layer of glass. The film layer may comprise an ink film layer, a resistive ink film layer, a layer of Polymer Thick Film (PTF) ink, and/or a nano ink layer.

A hairstyling apparatus is shown. The apparatus includes a heated barrel with a central axis. It also includes a heating element connected with the barrel and a rotating member located an end of the barrel and configured to rotate around the central axis of the barrel. The rotating member includes at least one a tab extending along a longitudinal length of the hairstyling surface over at least a portion of a longitudinally extending portion of the hairstyling surface. At least one rod with at least one comb attached to said at least one tab. The rod is heated by the heating element during use of the apparatus.

A hairstyling apparatus is shown. The apparatus includes a heated barrel with a central axis. It also includes a heating element connected with the barrel and a rotating member located an end of the barrel and configured to rotate around the central axis of the barrel. The rotating member includes at least one a tab extending along a longitudinal length of the hairstyling surface over at least a portion of a longitudinally extending portion of the hairstyling surface. At least one rod with at least one comb attached to said at least one tab. The rod is heated by the heating element during use of the apparatus.