Skin Color Tester XRITE CI6X

      X-Rite's high-precision spectrophotometer Ci6x series (skin colorimeter) can not only accurately measure the L*a*b* color space data, but also use different measurement methods for the appearance of different cosmetics, matching more effectively and precise skin color management. It has complete solutions in cosmetic color comparison, color development, makeup application, whitening, and sunscreen efficacy evaluation. The L*, a*, b* values of each observation point in the test area and the control area were measured with a spectrophotometer Ci6x series, and each area was tested three times and recorded. Calculate the parameters of the individual type angle (ITA°) of the skin color, and the calculation formula is as follows:

     The larger the ITA° value, the lighter the skin tone, on the contrary, the darker the skin tone. L- represents brightness (indicates the change of color from black to white); a- represents the amount of hemoglobin or erythema (indicates the change of color from green to red), soothing effect , to judge the efficacy of dark circles; b-represents the amount of pigment (indicates the change in color from blue to yellow)