Simultaneous determination of colorant mixtures used in cosmetics by partial least-squares multivariate calibration spectrophotometry Capitán Vallvey, Luis Fermín Navas, N. Avidad Castañeda, Ramiro Orbe Payá, Ignacio De Berzas-Nevado, J. J. Colorants determination Cosmetic analysis Partial least-square Multivariate calibration In this work, since PLS-1 provided the most accurate predictions, it was applied in the proposed method for determining these colorants in commercial cosmetic products as colognes, facial tonics, deodorants, after shave lotions, bath gels, bath salts and shampoos. In all cases the obtained results are satisfactory. 2014-07-01T11:17:47Z 2014-07-01T11:17:47Z 1997 journal article Capitán-Vallvey, L.F.; et al. Simultaneous determination of colorant mixtures used in cosmetics by partial least-squares multivariate calibration spectrophotometry. Analytical Sciences, 13(3): 493-496 (1997). [http://hdl.handle.net/10481/32426] 0910-6340 1348-2246 http://hdl.handle.net/10481/32426 10.2116/analsci.13.493 eng open access Japan Society for Analytical Chemistry (JSAC)