Abstract: A mobile device for measuring reflectance properties of a surface includes a first imaging device comprising an image sensor and a lens characterized by an optical axis; a first illumination source having an optical axis disposed at an angle of 45° with respect to the first imaging device lens' optical axis; a second imaging device comprising an image sensor and a lens characterized by an optical axis; and a second illumination source having an optical axis intersecting the first imaging device lens' optical axis where the first illumination source intersects the first imaging device lens' optical axis, the optical axes of the first imaging device and the second illumination source defining a second measurement plane. The mobile device further comprises a computer processor and a non-volatile memory comprising computer-readable instructions to acquire data from the first and second imaging devices and derive reflectance information of the surface of interest.

Abstract: The invention concerns a make-up or coloring method comprising steps which consist in imaging at least one part of the human body to be treated, analysing local characteristics of said part, and applying treatment products of said part based on said local characteristics.

Abstract: An apparatus designed to examine a surface includes a polarization analyser element, or analyser, placed in the path of a light beam reflected by the surface, a device configured to take digital images and placed in the path of the beam reflected by the surface downstream of the analyser, and a processing unit capable of calculating the color and the intensity of a plurality of pixels of at least one image.

Abstract: A system comprising a plurality of comparison samples each having a reflectance spectrum and being configured to substantially simulate a color of a keratinous element having a reflectance system. The reflectance spectrum of each comparison sample may be substantially similar to the reflectance spectrum of a respective keratinous element such that the comparison sample and the keratinous element appear to an observer to have substantially the same color under at least two differing illuminants.

Abstract: The apparatus for assistance in makeup includes a measurement unit for measuring local phenomena of light interaction with a zone to be made up and/or treated; a database relating to the BRDF of various cosmetic and/or care products; a selector unit enabling a product to be selected; a calculation unit for calculating the resulting BRDF to the zone virtually made up or treated with the product, on the basis of measurement previously taken and on the basis of information taken from the database and relating to the BRDF of the selected makeup product; and a display unit for displaying the zone virtually made up or treated in this way as a result of the previously calculated resulting BRFD.

Abstract: The invention concerns a make-up or coloring method comprising steps which consist in imaging at least one part of the human body to be treated, analysing local characteristics of said part, and applying treatment products of said part based on said local characteristics.

Abstract: A system comprising a plurality of comparison samples configured to substantially simulate the appearance of a keratinous element. Each comparison sample may be configured to substantially simulate both a color and an appearance characteristic other than color of the keratinous element.

Abstract: The invention concerns a cosmetic composition comprising, in a cosmetically acceptable medium, at least a block copolymer consisting of at least two polymer blocks, each of the polymer blocks having a refractive index more or less by at least 0.1 unit than the refractive index of the neighbouring polymer block(s). Said composition can be used for hairstyling.

Abstract: A system comprising a plurality of comparison samples configured to substantially simulate the appearance of a keratinous element. Each comparison sample may be configured to substantially simulate both a color and an appearance characteristic other than color of the keratinous element.

Abstract: A system comprising a plurality of comparison samples each having a reflectance spectrum and being configured to substantially simulate a color of a keratinous element having a reflectance system. The reflectance spectrum of each comparison sample may be substantially similar to the reflectance spectrum of a respective keratinous element such that the comparison sample and the keratinous element appear to an observer to have substantially the same color under at least two differing illuminants.

Abstract: The apparatus is designed to examine a surface 9 and comprises a polarization analyzer element 14, or analyzer, placed in the path of a light beam 17 reflected by the said surface 9, a means for taking digital images 13 placed in the path of the beam 17 reflected by the said surface 9 downstream of the analyzer 14, and a processing unit 15 capable of calculating the brightness and the intensity of a plurality of pixels of at least one image.