Patent ID: 7023552

Claim:
A process for making a colored make-up cosmetic composition which produces a transparent of translucent colored coat on at least one of the skin, lips and superficial body growths, comprising the following successive steps: (1) selecting a cosmetically acceptable base having at least one of bulk opaqueness, translucency and transparency, (2) preparing at least one series of samples of the cosmetic base, each series comprising increasing amounts of a coloring agent dissolved or dispersed in the cosmetically acceptable base, (3) spreading each of the samples of the at least one series over a transparent slide having a recess with a depth of 10 μm, (4) measuring, for each of the samples of the at least one series, the transmission of the layer thus formed at a wavelength corresponding to the maximum of the absorption or scattering peak (λ max ) of the coloring agent, (5) drawing a calibration curve by plotting the values of the transmission at λ max as a function of the concentration of the coloring agent, (6) selecting, from the calibration curve thus obtained, a concentration of the coloring agent corresponding to a transmission at λ max ranging from 20% to 80%, and (7) incorporating the at least one coloring agent from the at least one series, at the concentration selected in step (6), in a cosmetic base in the liquid state and identical to or different from that used in step (1).