Abstract: The present invention relates to a method for determining, from a set of physical elements (10), a specific value of an input data for a tool (12) for determining a customized cosmetic action for an individual (I), each physical element (10) having a sensory property representative of a characteristic of a body zone and associated with an identifier, each identifier being associated with a predefined value of said input data characterizing said body zone according to a match table, the method comprising the following steps:—selecting a physical element (10) for the individual (I) among the set of physical elements (10), —acquiring, via the calculator (14), the identifier of the selected physical element (10), and—determining, via the calculator (14), the predefined value of the input data corresponding to the identifier acquired according to the match table.

Abstract: The present invention relates to a method for determining a parameter specific to the custom-made coloring of hairs of a given individual, the method including the following steps: receiving magnitudes representative of a first target color and of a first initial color in a colorimetric space, determining a cosmetic product composition according to magnitudes received and a colorimetric rendering model, applying a cosmetic product having the determined composition on the hairs to be colored of the individual in order to obtain colored hairs, evaluating the color of the colored hairs in order to a magnitude representative of a first final color in the colorimetric space, and determining a colorimetric deviation parameter specific to the individual according to magnitudes representative of the first final color and of the first target color.

Abstract: Methods for creating custom hair formulations include generating a first input set and a second input set, formulating a hair formulation recipe, displaying a predicted hair color on the user input device, and dispensing a hair formulation from a dispenser. The first input set is based upon a plurality of present hair state inputs received by a user input device of a hair formulation system. The second input set is based upon a target hair state input received by the user input device. Formulating the hair formulation recipe includes using a processor of the hair formulation system that is operatively connected to the user input device to formulate the hair formulation recipe based upon the first and the second input sets. The predicted hair color is based upon at least one present hair state inputs and the target hair state input.

Abstract: The invention relates to a method for determining the color of a cosmetic product on a skin model, the method including steps to: —for a plurality of wavelengths, supply experimental points giving diffusion and/or absorption values for several mixes of a given concentration of one pigment in another pigment, each mix corresponding to different given concentrations, and —use a physicochemical model capable of predicting interactions between pigments passing through experimental points to obtain the curve giving the diffusion and/or absorption for each wavelength as a function of the given concentration of pigment in the mix of pigments considered.

Abstract: Methods for creating custom hair formulations include generating a first input set and a second input set, formulating a hair formulation recipe, displaying a predicted hair color on the user input device, and dispensing a hair formulation from a dispenser. The first input set is based upon a plurality of present hair state inputs received by a user input device of a hair formulation system. The second input set is based upon a target hair state input received by the user input device. Formulating the hair formulation recipe includes using a processor of the hair formulation system that is operatively connected to the user input device to formulate the hair formulation recipe based upon the first and the second input sets. The predicted hair color is based upon at least one present hair state inputs and the target hair state input.

Abstract: Systems and methods for predicting a Sun Protection Factor (SPF) in vitro, such as by spectral/image analysis, of a sunscreen formulation are described.

Abstract: The invention relates to a method for determining the color of a cosmetic product adapted to the skin of a wearer of the cosmetic product, the method including the following steps: —supply data related to the color of the wearer's skin, —determine the color of the cosmetic product by using a correspondence function applied to data about the color appearance of the wearer's skin, the correspondence function associating a cosmetic product color with a wearer's skin color appearance, the correspondence function having at least three reference associations, a reference association associating a predetermined cosmetic product color with a predetermined wearer skin color within a tolerance, the tolerance being equal to a distance of 2 in the L*a*b* color space.

Abstract: Systems and methods for predicting a Sun Protection Factor (SPF) in vitro, such as by spectral/image analysis, of a sunscreen formulation are described.

Abstract: The invention relates to a method for determining the color of a cosmetic product on a skin model, the method including steps to: for a plurality of wavelengths, supply experimental points giving diffusion and/or absorption values for several mixes of a given concentration of one pigment in another pigment, each mix corresponding to different given concentrations, and use a physicochemical model capable of predicting interactions between pigments passing through experimental points to obtain the curve giving the diffusion and/or absorption for each wavelength as a function of the given concentration of pigment in the mix of pigments considered.

Abstract: The invention relates to a method for determining the color of a cosmetic product adapted to the skin of a wearer of the cosmetic product, the method including the following steps:—supply data related to the color of the wearer's skin,—determine the color of the cosmetic product by using a correspondence function applied to data about the color appearance of the wearer's skin, the correspondence function associating a cosmetic product color with a wearer's skin color appearance, the correspondence function having at least three reference associations, a reference association associating a predetermined cosmetic product color with a predetermined wearer skin color within a tolerance, the tolerance being equal to a distance of 2 in the L*a*b* color space.