A process for hair dyeing and/or bleaching, including applying, to the head of hair, at least one hair dyeing or bleaching compound using a device. The device including at least two nozzles, at least one of which is supplied with at least one pressurized liquid containing said compound, the nozzles being arranged such that their respective jets collide with one another.

There is described a method for colouring hair, said method comprising treating hair with a composition comprising dihydroxyacetone (DHA), in free form or in salt form; optionally drying the hair; and heating the treated hair, including the applied DHA composition, to a temperature of from about 100° C. to about 250° C.

A hair color board includes a divider body having a plurality of elongated peaks alternating with a plurality of elongated valleys. The plurality of elongated peaks and the plurality of elongated valleys extend to an end. The end may be concave such as to be positioned against a person’s head.

A dispenser has vertical walls defining an interior volume for receiving a stack of Z-folded sheets of hair treatment foil with a pre-determined size and pre-determined weight, a lifting platform on which the stack of sheets is placed, a dispensing guide across the top of the vertical walls with a dispensing slot; and a lifting device such as one or more springs which provide sufficient lifting force to the platform to maintain the topmost sheet of the stack to be position immediately below the dispensing guide as sheets and weight are removed from the stack.

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 relates to a hair colouring and/or bleaching composition comprising at least a first aqueous component (i) and a second aqueous component (ii) being mixed prior to application onto hair, wherein the first aqueous component (i) comprises, in a cosmetically acceptable carrier one or more oxidizing agent(s), and the second aqueous component (ii) comprises, in a cosmetically acceptable carrier, one or more alkalizing agent(s) selected from the group consisting of ammonia, its salts and mixtures thereof wherein the first component (i) or the second component (ii) or both comprise at least a first and a second malodor suppressant and optionally one or more further malodor suppressants, or the first component (i) comprises at least a first malodor suppressant and the second component (ii) comprises at least a second malodor suppressant, the first and the second malodor suppressant and any further malodor suppressant forming a malodor suppressant system in the hair colouring and/or bleaching composition, and each of the first and second malodor suppressants being a compound having a distribution coefficient log P of 2 or more and a molecular weight of between 100 and 400. The invention further relates to a hair colouring or bleaching kit comprising an individually packaged first and second aqueous component, a method of treating hair, a method of sequential oxidative hair colouring or hair bleaching and the use of at least a first and a second malodor suppressant as a malodor suppressant system in a composition for the treatment of hair.

A method for coloring hair on a human head using a blow dryer is provided. According to the method, the hair is separated into sections of different shape (e.g., rhombic, square, triangular, horseshoe-shaped, etc.). Then, subsections of hair are isolated in each section. Each subsection of hair is grabbed and pulled (in a direction of a cut line of the hair) with one hand of a hairdresser, and different (e.g., short, medium-length, and long) layers of hair are blown out of the subsection of hair by an air flow from the blow dryer held in another hand of the hairdresser. After that, at least one of the blown-out layers of hair is fixed (e.g., with a clamp) and colored. The hair thus colored is then rinsed and treated according to a post-coloring recipe.

One pouch for storage of multiple components of a mixture is described with a first compartment and a second compartment. At least one channel is defined between the first compartment and the second compartment and at least one seal is installed within the channel. Method of use the pouch includes: locating the channel; breaking the seal; and mixing the contents in the first and second compartment.

The present invention is directed to a Hair Pigment Dispensing (“HPD”) device that may be connected to the internet and intended for professional hairstylists to prepare their hair color formulations. Hair dying is a process that can take several hours and requires precise measurements, high attention to detail, and informed decision making. Not to mention, hair dying requires a large inventory of products to be readily available to the hairstylist. The present invention aims to decrease errors in product measurement, inventory size, and time spent mixing hair color ingredients to improve the overall experience for both the hairstylist and the client. Furthermore, the present invention provides the advantage of storing data from various client mixtures either locally or within a cloud server so that a customer can receive uniform coloring.

Hair dye composition and method of dyeing hair that targets only at least one grey part using a permanent hair dye component comprising a specific volume percentage of a particulate pigment to permanent hair dye component. The purpose of some embodiments of the invention is to delay the need for women to dye their hair in full. At least one pigment particle (about 0.0770 ml or about 1/64th of a teaspoon) may be added to a bottle of 71 ml of permanent hair dye, which allows the permanent hair dye composition to become visible and allows for more accuracy during application. Using small quantities of 5 cc per application (hair dye: 2.5 ml; developer: 2.5 ml) reduces the amount of dye applied to needless areas of the hair. The use of a make-up sponge stick allows for better accuracy. The composition is multi-use, and provides for 28 applications (71 ml bottle of dye and 71 ml of developer), and will save users time and money. All these characteristics provide for a hair dye composition that significantly reduces the amount of harmful chemicals applied to users' hair.