A portable hair printer includes a communication module, a printer module that performs a printing operation, a memory that stores a program for printing an image on a surface of a bundle of hairs, and a processor that executes the program, wherein the program is executed by the processor, receives an image to be dyed on the bundle of hairs from the user terminal through the communication module, and transmits the received image to the printer module to perform an image printing operation for the bundle of hairs, and the portable hair printer further comprises a housing having the communication module, the printer module, the memory, and the processor embedded therein, and the housing includes an upper housing and a lower housing hinged to each other around a hinge, and a sensor module.

A method for determining a hair coloration treatment that changes hair from an initial color into a desired color is provided. A model for predicting hair lightening results for a bleaching agent or UV treatment is used. The model associates the lightening treatment with sets comprising a starting color and a corresponding lightened color achieved when applying the treatment onto hair having the starting color. The model determines a lightened hair color achieved when applying the lightening treatment onto the hair of the user, when the lightened hair color is close to the desired color. Otherwise an intermediate hair color is determined, such that the intermediate hair color corresponds to a starting hair color for which there exists at least one coloration composition adapted for changing the intermediate hair color into the desired color. Based thereon, a hair coloration treatment is provided.

The instant disclosure relates to hair coloring base compositions and developer compositions that can be incorporated into a hair color cartridge, which combines the compositions and dispenses them onto hair. The hair color cartridge includes: (a) one or more hair coloring base compositions and; (b) one or more developer compositions, which can be combined to form an active hair coloring composition and dispensed onto hair. The hair coloring base compositions typically include one or more oxidative dye precursors; one or more alkalizing agents; one or more reducing agents; optionally, one or more cationic conditioning polymers; one or more surfactants; one or more water-soluble solvents; and water. The developer compositions typically include one or more oxidizing agents; one or more surfactants; and water. The unique components and fluid characteristics of the various compositions are such that devices or appliances comprising them accurately combine and dispense the hair coloring base composition(s) with the developer composition(s) in a predetermined ratio with excellent consistency for application to hair.

A valve system comprises: a valve body; a valve cap; and a valve plug between the valve body and valve cap is compressed radially and axially, and a central bore extends wholly through the valve body and valve cap and partially through the valve plug. The valve system is welded to a packet which can contain a hair color formula. One or more of the packets are then used in a cartridge compatible with a dispensing device.

A hair coloring composition that includes about 5 to 25 wt. % of a first monosaccharide having 2 to 4 carbon atoms, up to about 10 wt. % of a second monosaccharide having 2 to 4 carbon atoms, about 0.1 to 5 wt. % of a surfactant, and about 0.1 to 5 wt. % of a delivery agent, each based on a total weight of the hair coloring composition. A method for coloring hair, that involves applying the hair coloring composition onto the hair, and optionally applying heat to the hair at a dyeing temperature of 30 to 205° C.

Method for treating hair comprising the application onto hair of polymeric layer(s) which can removed to a large extent or even totally in an easy manner upon request of the user by using oxidizing composition.

There is disclosed a method of producing a coating on an external surface of individual mammalian hair fibers, the method comprising (a) applying on the external surface of the individual fibers, an oil-in-water emulsion including an amino-silicone film forming pre-polymer, so as to form an at least partially cured amino-silicone film; and (b) applying an aqueous dispersion on said amino-silicone film, to produce an overlying, optionally pigmented, polymeric film that coats said at least partially cured amino-silicone film; wherein the aqueous dispersion contains: (i) a polymeric material having neutralized acid moieties; and optionally (ii) a plurality of pigment particles, at least partially enveloped by the polymeric material, and dispersed within said aqueous dispersion. Suitable coating or coloring compositions and kits including the same are also disclosed, as well as methods for preparing the compositions or removing films formed therewith.

The present invention relates to a method of coloring keratin fibers, especially human hair, which delivers intensive, long lasting, brilliant colors and provides improved grey coverage. Kit therefore is disclosed as well. The method of colouring hair involves treating hair prior to colouring with an alkaline reducing agent.

The disclosure relates to a method for dyeing keratin fibers, in particular human keratin fibers such as hair, involving the application of a dye composition (A) on the fibers, said dye composition comprising one or more oxidation dyes, one or more scleroglucan gums in a total weight content greater than or equal to 0.5% relative to the total weight of the composition (A) and one or more alkaline agents, and the application of an oxidizing composition (B) comprising one or more chemical oxidizing agents and one or more scleroglucan gums preferably in a total weight content greater than or equal to 0.5% relative to the total weight of the composition (B); the oxidizing composition (B) being mixed with the dye composition (A) just before use (application on said fibers). The disclosure also relates to a multi-compartment device suitable for implementing the method.

A method of hair dying is provides that includes applying a polymer based hair dye to hair and emitting light on the applied polymer based hair dye for a duration to cure the polymer based hair dye on the hair. In certain aspects a device is provided that emits polymer curative energy for curing an applied polymer based hair dye that includes a housing, at least polymer curative light source disposed in the housing, and a controller operatively connected to the heat source and the at least one polymer curative light source. In certain embodiments a heat source is disposed in the housing that includes a polymer curative light source.