A composition dispensing device engages a body surface, such as the scalp, while simultaneously dispensing a composition from an attached container on the surface. The device detachably joins a container of a composition and enable uniform dispensing and application of the composition on a body surface. The device comprises a housing section that detachably joins with a container of composition. A platform section having a plurality of apertures rests coplanar with the housing section. A keying mechanism secures the platform section to the housing section. A plurality of conduits, or hollow bristles, extend from the platform section. The conduits include channels that are in communication with the housing section and the container of composition. The conduits are arranged as inner and outer conduits, with the outer conduits being slightly longer to create a generally concave effect. The conduits terminate at an angled tip portion that engages the body surface, while simultaneously dispensing the composition from terminal openings or lateral openings formed at the tip.

A smart applicator for liquid cosmetic to hair, skin or nails is described, comprising a position indicator to measure the relative change of position of the applicator across a nearly flat surface; a sensor array to measure the prior color or cosmetic condition of hair strands or skin condition; an optional comb array to direct hair strands from their roots into a regular linear array; a microcontroller which outputs electrical signals to operate an array of micro-mechanical or inkjet nozzles aligned with the comb array so as to dispense dye or cosmetic droplets to the hair strands or skin surface according to input received from said sensors.

A device for selectively entraining hair strands from the scalp has at least one hooking or a clamping applicator, the at least one hooking applicator employing a hook that rotates to entrain the hair strands, and the clamping application employing a flat plate. A hair product container having a styling product or hair color therein is provided. The device also includes a mechanism to apply the hair product to the entrained hair stands. The mechanism using a hooking applicator can include a worm gear.

The application provides a hair coloring brush. The hair coloring brush can include a handle and a detachable brush cap that detachably couples to the handle. The handle can include an elongated body, a brush attachment protrusion, where the brush attachment protrusion extends outward from the elongated body and has a first protrusion side and a second protrusion side. The handle can also include a first side ridge and a second side ridge. The detachable brush cap can include a distal brush end, a plurality of bristles, and a cavity opposite the distal brush end, where the cavity has a cavity wall and an internal groove located in the cavity wall. The first side ridge and the second side ridge can tension fit in the internal groove when the detachable brush cap is inserted over the brush attachment protrusion.

In various embodiments, a method of providing a hair treatment agent is provided. The method can have a detecting of at least one sensor value on hair of a user by employing at least one portable sensor, a determining of a hair condition of the user by employing the detected at least one sensor value, a computer-assisted determining of a user-specific hair treatment agent including the determined hair condition, and a preparing of the determined user-specific hair treatment agent by employing a hair treatment agent mixing device.

Keratin protein filler compositions are provided that include at least one keratin protein derived from human hair. Hair coloring kits are also provided that include at least one keratin protein filler composition and at least one hair colorant composition. Methods of treatment of various hair conditions are also provided.

In a hair styling device (20), a light emitting diode (33) is configured to deliver optical energy to hair, wherein an energy fluence of the optical energy is between 0.5 and 9 J/cm.sup.2, and more preferably between 1 and 5 J/cm.sup.2. The light emitting diode (33) is pulse-driven, and a pulse width of the optical energy is at least 50 ms. An output wavelength of the optical energy may be between 400 and 900 nm. The pulse width of the optical energy is preferably between 50 and 300 ms. The hair styling device (20) may comprise an optical shield (32) configured to block stray light during light exposure of the hair. An inner surface of the optical shield (32) may be reflective and/or may have a parabolic shape. The optical shield (32) may be movable between an open position in which a lock of hair can be placed in the hair styling device (20) while the optical energy is not applied, and a closed position in which light is prevented from escaping the hair styling device (20) while the optical energy is applied to the hair. The hair styling device may be a hair straightener having opposing first and second straightening surfaces, of which at least the first straightening surface comprises the light emitting diode (33), and at least the second straightening surface is arranged for reflecting light from the light emitting diode (33).

A modular and multi-chamber hair dye dispenser and kit including the same are provided. Namely, the dispenser comprises a first and second chamber configured to each hold a fluid substance and threadedly engage one another. A pressure activated gate is disposed between the chambers and configured to selectively permit fluids held therein to mix upon screwing the chambers into one another. A removable spacer may be disposed between the chambers to prevent breach of the gate until desired. An outlet secured within an open front end of the first chamber is configured to dispense mixed fluid via one or more openings and, as desired, receive an interchangeable applicator. In a kit, fluid substances may comprise hair coloring agent and a developer, activator, or oxidizer.

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.

Implementations of a hair extension washboard are provided. In some implementations, the hair extension washboard comprises a hair extensions board, a hair clip assembly, and a board support. In some implementations, the hair extension washboard further comprises a hair drying enclosure. In some implementations, the hair extension washboard also comprises surface connectors.

In some implementations, a method of using the hair extension washboard comprises positioning the hair extension washboard in a sink or other suitable location, holding hair extensions with the hair extension washboard, and washing, coloring, drying, etc. the hair extensions while held by the hair extension washboard.