In some embodiments, a formulation delivery device comprising a motor and a formulation dispensing assembly is provided. The formulation dispensing assembly comprises a reciprocating nozzle assembly operated by the motor. The formulation delivery device further comprises circuitry configured to generate signals indicative of application of one or more formulation products dispensed by the formulation dispensing assembly, and circuitry configured to transmit the signals indicative of the application of the formulation products to a usage analysis system. In some embodiments, a computer-implemented method of automatically determining at least one hair characteristic for a subject is provided. A computing system receives signals from a formulation delivery device indicative of application of one or more dispensed formulation products, analyzes the signals to automatically determine the at least one hair characteristic, and stores the at least one hair characteristic in a usage data store.

A hair extension bar comb retains hair for a coloration or treatment process on an elongated base. In one embodiment, first and second comb teeth rows are respectively mounted in parallel on corresponding laterally spaced apart parallel side regions of the base (typically on a top flat base surface). In use, some teeth of at least one comb teeth row captures extension hair therein. A coloration/treatment process is engaged on captured extension hair in the lateral space between the first and the second comb teeth rows. A floor or table stand may be provided with a mounting coupler on the bottom of the base. A hair extension storage bag is elongated, defining a vertical bag cavity with an upper edge lip closure system. A horizontal bar with a single comb teeth row is mounted in the upper region of the bag cavity. Comb teeth capture extension hair which falls down into the vertical bag cavity. A vertical closure system is also included.

The present disclosure relates to a comb, and more particularly, to a hairbrush capable of conveniently dyeing hair by separating, that is, thinning a part of user's hair from other parts during dyeing. The highlighting comb includes a body formed to be elongated in a longitudinal direction; a plurality of comb teeth disposed in the body and disposed to cross the longitudinal direction of the body; and a plurality of first hook bristles disposed in the body, crossing the longitudinal direction of the body, and disposed on an opposite side of the comb teeth with respect to the body.

A system and method for one or more hair dye tools with different shapes to imprint different designs onto a person's hair after being dipped onto hair whereby the hair dye tool may be used for other objects such as paper, posters, appliances, skin, or other surfaces whereby multiple hair dye tools may be used in combination to create more intricate designs and patterns for a person.

A hair treatment kit comprises a hair treatment composition selected from the group of semi-permanent oxidative and/or direct dye hair colorant compositions, hair bleaching compositions, highlighting compositions, and combinations thereof, a reservoir for holding the temporary hair treatment composition, and an applicator fluidly connected to the reservoir for selectively applying the hair treatment composition to a targeted area of hair. Methods of applying the hair treatment composition comprise selectively engaging the applicator with a targeted area of hair, leaving the hair treatment composition in the targeted area for a time period, washing the hair treatment composition out of the targeted area, closing the reservoir to preserve remaining hair treatment composition for later use, and reapplying the hair treatment composition to the targeted area.

The present invention relates to the use, for dyeing or lightening keratin fibres, in particular human keratin fibres such as the hair, of a hand-held styling apparatus (1) equipped with at least one treatment surface (2d, 3d) partially or totally covered with at least one substrate (6) comprising a surface (6a) coated with at least one layer (6b) containing one or more dyes, preferably chosen from oxidation dyes and/or direct dyes, and/or one or more oxidizing agents. The invention also relates to an assembly (11, 24, 26) intended for dyeing or lightening keratin fibres, in particular human keratin fibres such as the hair, comprising at least one aqueous composition and at least one hand-held styling device (1) as defined above.

The present invention relates to a cosmetic device comprising: a support and a composition, carried by the support, for dyeing or bleaching the hair, said composition having a formulation that varies depending on the position on the support, so as to allow shaded dyeing or bleaching to be produced on the hair by transfer.

An application device for applying hair-coloring composition, comprising a device body, comprising a first reservoir comprising a first piston; the first reservoir configured to receive a first part of a hair-coloring composition; a second reservoir comprising a second piston; the second reservoir configured to receive a second part of a hair-coloring composition; and a dispensing mechanism associated with the first piston and with the second piston; the dispensing mechanism configured to sealingly move the first piston inside the first reservoir and the second piston inside the second reservoir; and an application cap, comprising a mixing mechanism; and a plurality of projecting tines; wherein the application cap is configured for reversible-connection with the device body such that, when the application cap is connected with the device body, the first reservoir and the second reservoir are sealed from the outside except channels of the plurality of projecting tines which are in fluid communication with the first reservoir and the second reservoir, through the mixing mechanism; and wherein the dispensing mechanism is configured, when activated, to move the first piston and the second piston towards the plurality of projecting tines thereby mixing the first part of the hair-coloring composition with the second part of the hair-coloring composition to form a mixed hair-coloring composition to be dispensed through the plurality of projecting tines.

A hair coloring device comprises: a first rectangular sheet having a top edge, a bottom edge, opposing side edges, a front surface, and a back surface; a second rectangular sheet having top edge, a bottom edge, opposing side edges, a front surface, and a back surface; wherein the back surface of the second rectangular sheet is secured to the front surface of the first rectangular sheet after hair coloring is applied to hair disposed between the first rectangular sheet and the second rectangular sheet and wherein the top edges, bottom edges, and opposing side edges are aligned; and wherein the first rectangular member and the second rectangular member each comprise a transparent thermoplastic material. A process of coloring hair includes using the hair coloring device.

An applicator for applying a product to hair, especially a hair colouring product, including: at least one first row of teeth extending longitudinally over a distance l.sub.1, from a first application face of the applicator; and a plurality of second rows of teeth, extending longitudinally over a distance l.sub.1, from a second application face of the applicator, which is arranged opposite the first application face, the ratio l.sub.1/l.sub.2 being lower than or equal to 0.75.