A reusable and adjustable heat-insulating bonnet and a cape combination for use in hair treatment comprising: the bonnet having a heat reflecting inner layer and an outer layer made of a durable and flexible plastic material; a collar protector extending integrally from the lower part of the bonnet; the bonnet having a set of receptacles for receiving press studs located at the top of the cape so that the bonnet and the cape can be releasably attached together; the cape having sleeves located at the front so as to free up arm movement.

The present invention provides a gas supply device for lightening hair color, including a separating layer and a functional unit wrapped in the separating layer, wherein the functional unit includes a metal peroxide, an activator and a catalyst, the gas supply device further wraps a composition that generates carbon dioxide, nitric oxide, and/or hydrogen. The present invention discloses a use and method of a gas supply device for lightening hair color, including supplying oxygen to the scalp and the hair, and further reacting to generate active oxygen. The present invention further discloses a method for eliminating a dye on the hair by using the gas supply device.

The present invention provides a gas supply device for lightening hair color, including a separating layer and a functional unit wrapped in the separating layer, wherein the functional unit includes a metal peroxide, an activator and a catalyst, the gas supply device further wraps a composition that generates carbon dioxide, nitric oxide, and/or hydrogen. The present invention discloses a use and method of a gas supply device for lightening hair color, including supplying oxygen to the scalp and the hair, and further reacting to generate active oxygen. The present invention further discloses a method for eliminating a dye on the hair by using the gas supply device.

The present invention provides a method for promoting hair growth and improving white hair condition, including supplying hydrogen and oxygen to scalp and hair. The present invention further provides a hear wearable device or a hairdressing apparatus for promoting hair growth and improving white hair condition, including a gas supply device, wherein the gas supply device includes a separation layer, a hydrogen-producing composition wrapped in the separation layer, and an oxygen-producing composition wrapped in the separation layer; the hydrogen-producing composition includes: (1) a metal hydroxide and aluminum powder, or (2) a metal peroxide and aluminum powder, or (3) a hydride, or (4) a combination of the three above; and the oxygen-producing composition includes a metal peroxide.

A protective head cover having selectable size and location of at least one opening for exposure of a portion of a user's hair to an external hair treatment environment. An impermeable outer surface of the protective head cover protects hair thereunder from an external hair treatment environment. A main opening receives a user's head inserted into the protective head cover. An opening on the protective head cover, separate from the main opening, has an opening size that is selectable from a plurality of selectable sizes and an opening location that is selectable from a plurality of selectable locations.

A protective head cover having selectable size and location of at least one opening for exposure of a portion of a user's hair to an external hair treatment environment. An impermeable outer surface of the protective head cover protects hair thereunder from an external hair treatment environment. A main opening receives a user's head inserted into the protective head cover. An opening on the protective head cover, separate from the main opening, has an opening size that is selectable from a plurality of selectable sizes and an opening location that is selectable from a plurality of selectable locations.

The present invention provides a gas supply device for lightening hair color, including a separating layer and a functional unit wrapped in the separating layer, wherein the functional unit includes a metal peroxide, an activator and a catalyst, the gas supply device further wraps a composition that generates carbon dioxide, nitric oxide, and/or hydrogen. The present invention discloses a use and method of a gas supply device for lightening hair color, including supplying oxygen to the scalp and the hair, and further reacting to generate active oxygen. The present invention further discloses a method for eliminating a dye on the hair by using the gas supply device.

The present invention provides a gas supply device for lightening hair color, including a separating layer and a functional unit wrapped in the separating layer, wherein the functional unit includes a metal peroxide, an activator and a catalyst, the gas supply device further wraps a composition that generates carbon dioxide, nitric oxide, and/or hydrogen. The present invention discloses a use and method of a gas supply device for lightening hair color, including supplying oxygen to the scalp and the hair, and further reacting to generate active oxygen. The present invention further discloses a method for eliminating a dye on the hair by using the gas supply device.

The through-hole provided in the substantially central portion of the cover has a thinness that can be stretched when pulled. It is formed to have such a size that the head of a wearer can tautly pass through it, and when the head passes through it, the cover comes to drape over the abdomen and the back of the wearer, and when the abdomen side is lifted up to expose the face of the wearer protruding from the through-hole, the periphery of the through-hole stretches further and adheres to the skin around the face of the wearer from along the nape, under the ears, to along the forehead. Thus, for applying a general hair medicant, such as hair dye or treatment, the cover is a multi-purpose cape which encases the hair with adhering hair medicant, and easily enwraps the hair in its entirety.

The through-hole provided in the substantially central portion of the cover has a thinness that can be stretched when pulled. It is formed to have such a size that the head of a wearer can tautly pass through it, and when the head passes through it, the cover comes to drape over the abdomen and the back of the wearer, and when the abdomen side is lifted up to expose the face of the wearer protruding from the through-hole, the periphery of the through-hole stretches further and adheres to the skin around the face of the wearer from along the nape, under the ears, to along the forehead. Thus, for applying a general hair medicant, such as hair dye or treatment, the cover is a multi-purpose cape which encases the hair with adhering hair medicant, and easily enwraps the hair in its entirety.