Abstract: An arrangement for determining a degree of stretching of hair is provided. The arrangement includes a detection unit for detecting hair characteristics and an evaluation unit for evaluating the detected hair characteristics and for determining the degree of elongation of hair based on the detected hair characteristics. The detection unit contains a near-infrared sensor, and is configured to irradiate a hair sample with electromagnetic waves in the infrared range and to detect an absorbance of the hair sample in a wavelength range from about 800 to about 2500 nm. The acquisition unit is configured to generate an absorption spectrum of the hair sample in the wavelength range of from about 800 to about 2500 nm and provide it to the evaluation unit and the evaluation unit is configured to compare the generated absorption spectrum with a calibration model and to determine a degree of elongation of the hair sample.

Abstract: 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.

Abstract: A method for determination of a cross-manufacturer hair coloration agent recommendation is provide. The method includes the allocation of a number of hair coloration agents to respectively one standard source hair color of a number of source hair colors, a coloration of hair samples with the number of hair coloration agents, a colorimetric measurement of the number of hair samples, a determination of a color difference between each of the number of colors, an allocation of each of the hair coloration agents with unknown composition to one of the hair coloration agents with known composition in such a way that the color difference is minimized, a determination of the user source hair color, a determination of the user's desired hair color, a determination of a first recommended hair coloration agent from the number of hair coloration agents of known composition and of a second recommended hair coloration agent.

Abstract: A method for determining a coloration product recommendation, in particular a hair coloration product recommendation. First images representing an object colored using a coloration product are obtained. A color of the colored object is identified on the images by determining a global color value taking into account different elements within the image. Then a desired color is obtained. A recommendation for a coloration product to achieve the desired color is determined. The recommended coloration product corresponds to the product which keeps the color difference between the desired color and the identified color below a predetermined threshold.

Abstract: A multi-component packaging unit (kit of parts) for lightening keratinous fibres, in particular human hair, which includes, formulated separately from one another, a first container containing a cosmetic agent (A), and a second container containing a cosmetic agent (B), wherein the agent (A) in the first container contains (a) at least one peroxy compound, for example hydrogen peroxide, and the agent (B) in the second container contains (b) at least one acid with formula (I): Also, a method for lightening hair, in which the multi-component packaging unit as contemplated herein is used.

Abstract: A method for determination of a cross-manufacturer hair coloration agent recommendation is provide. The method includes the allocation of a number of hair coloration agents to respectively one standard source hair color of a number of source hair colors, a coloration of hair samples with the number of hair coloration agents, a colorimetric measurement of the number of hair samples, a determination of a color difference between each of the number of colors, an allocation of each of the hair coloration agents with unknown composition to one of the hair coloration agents with known composition in such a way that the color difference is minimized, a determination of the user source hair color, a determination of the user's desired hair color, a determination of a first recommended hair coloration agent from the number of hair coloration agents of known composition and of a second recommended hair coloration agent.

Abstract: A method for determining a correspondence between hair coloring agents and hair coloring results is provided. The method includes obtaining hair color data. Further, the method includes splitting hair color data into a first hair color group and a second hair color group, the first hair color group comprising more data than the second hair color group. The method also includes adding artificial hair color data to the second hair color group. The method further includes building a model by employing predictive analytics based on the hair color data and including the artificial hair color data.

Abstract: In various exemplary embodiments, a method for computer-supported determination of properties of hair colors is prepared. The method can include: preparing hair color data, wherein the hair color data has values for a multitude of color pre-condition parameters and for at least one coloring result parameter for a multitude of coloring processes, wherein the multitude of coloring processes includes a first concentration of a first dye precursor and a second concentration of a second dye precursor for each coloring process of the multitude of coloring pre-condition parameters, wherein the multitude of coloring processes of the at least one coloring result parameters has a measured specification with a property of hair colors and determining a relationship between the multitude of coloring pre-condition parameters and the at least one coloring result parameter by employing predictive analytics based on the hair color data.

Abstract: An arrangement for determining a degree of stretching of hair is provided. The arrangement includes a detection unit for detecting hair characteristics and an evaluation unit for evaluating the detected hair characteristics and for determining the degree of elongation of hair based on the detected hair characteristics. The detection unit contains a near-infrared sensor, and is configured to irradiate a hair sample with electromagnetic waves in the infrared range and to detect an absorbance of the hair sample in a wavelength range from about 800 to about 2500 nm. The acquisition unit is configured to generate an absorption spectrum of the hair sample in the wavelength range of from about 800 to about 2500 nm and provide it to the evaluation unit and the evaluation unit is configured to compare the generated absorption spectrum with a calibration model and to determine a degree of elongation of the hair sample.

Abstract: According to various embodiments, a chromaticity diagram device (100, 300, 500) may have the following: a chromaticity diagram (102) which has a plurality of mutually different reference colors (102a, 102b, 102c), wherein the chromaticity diagram (102) has a transparent or translucent recognition region, by means of which a color of a hair tuft can be captured; and a hair clip device (106) attached to the chromaticity diagram (102) or integrally formed on the chromaticity diagram (102), which hair clip device is arranged to clamp a hair tuft to be captured in its hair color to the recognition region.

Abstract: A method for determining a degree of damage to hair is provided in the form of various embodiments. Said method can comprise the following steps: during the exposure of a hair sample to UV light (for example by employing a UV-LED), detecting fluorescence light emitted by the hair sample, determining a fluorescence intensity by employing the detected light, and determining the degree of damage to the hair using said fluorescence intensity.

Abstract: A multi-component packaging unit (kit of parts) for lightening keratinous fibres, in particular human hair, which includes, formulated separately from one another, a first container containing a cosmetic agent (A), and a second container containing a cosmetic agent (B), wherein the agent (A) in the first container contains (a) at least one peroxy compound, for example hydrogen peroxide, and the agent (B) in the second container contains (b) at least one acid with formula (I): Also, a method for lightening hair, in which the multi-component packaging unit as contemplated herein is used.

Abstract: The present disclosure relates to agents for the oxidative coloring of keratinic fibers, which are characterized in hat they contain derivatives of anisole as novel developer molecules.

Abstract: A method for determining a degree of damage to hair is provided in the form of various embodiments. Said method can comprise the following steps: during the exposure of a hair sample to UV light (for example by employing a UV-LED), detecting fluorescence light emitted by the hair sample, determining a fluorescence intensity by employing the detected light, and determining the degree of damage to the hair using said fluorescence intensity.

Abstract: Disclosed is a method with different exemplary embodiments for determining a degree of damage to hair. Said method can comprise the following steps: during the exposure of a hair sample to near-infrared and/or infrared light, recording a spectrum of at least part of the near-infrared and/or infrared light that has interacted with the hair sample, comparing at least part of the spectrum with a spectroscopic calibration model obtained by near-infrared and/or infrared spectra and degrees of damage of a plurality of calibration hair samples, and determining the degree of damage to the hair using said comparison.

Abstract: The present disclosure relates to agents for the oxidative coloring of keratinic fibers, which are characterized in hat they contain derivatives of anisole as novel developer molecules.

Abstract: The present disclosure concerns a multi-component packing unit (kit of parts) for reshaping and coloring keratinous fibers, more particularly human hair, comprising at least two separately packaged preparations (A) and (B), the first preparation (A) comprising, in a cosmetic vehicle (A1), one or more resorcinol derivatives from the group consisting of resorcinol, 2-methylresorcinol and 4-chlororesorcinol, and (A2) one or more oxidation dye precursors from the group consisting of p-phenylenediamines, p-aminophenols, 2,4,5,6-tetraaminopyrimidines and 4,5-diaminopyrazoles, and the second preparation (B) comprising, in a cosmetic vehicle (B1), hydrogen peroxide, wherein the molar ratio of all resorcinol derivatives (A1) in the preparation (A) to all developer-type oxidation dyes (A2) in the preparation (A), i.e. the molar ratio (A1)/(A2), is at least about 1.2.

Abstract: According to various embodiments, a chromaticity diagram device (100, 300, 500) may have the following: a chromaticity diagram (102) which has a plurality of mutually different reference colors (102a, 102b, 102c), wherein the chromaticity diagram (102) has a transparent or translucent recognition region, by means of which a color of a hair tuft can be captured; and a hair clip device (106) attached to the chromaticity diagram (102) or integrally formed on the chromaticity diagram (102), which hair clip device is arranged to clamp a hair tuft to be captured in its hair color to the recognition region.

Abstract: The present disclosure relates to agents for dyeing keratin fibers, in particular human hair, containing, in a cosmetic carrier, (a) at least one direct dye of formula (I), and (b) at least one anionic surfactant.

Abstract: In various exemplary embodiments, a method for computer-supported determination of properties of hair colors is prepared. The method can include: preparing hair color data, wherein the hair color data has values for a multitude of color pre-condition parameters and for at least one coloring result parameter for a multitude of coloring processes, wherein the multitude of coloring processes includes a first concentration of a first dye precursor and a second concentration of a second dye precursor for each coloring process of the multitude of coloring pre-condition parameters, wherein the multitude of coloring processes of the at least one coloring result parameters has a measured specification with a property of hair colors and determining a relationship between the multitude of coloring pre-condition parameters and the at least one coloring result parameter by employing predictive analytics based on the hair color data.