title: Evaluation of skin colouring properties of curcuma longa extract.
abstract: The aim of this study was to evaluate the skin colouring properties of curcuma extract in cosmetic formulations. Objective measurements of the skin colour changes were done by Chromameter using the CIE L*a*b* colour space parameters. These measurements were correlated with the results of the sensory analysis. The observations showed permanent, visible and statistically significant changing of b* component after one application of emulsions containing 12% and 25% of turmeric extract. The change of skin color remained also after removing the emulsion. Sensory analysis indicated that the tested emulsions with curcuma extract have a significant impact on skin smoothness, spreadability, cosmetic absorption and pillow effect.
authors.affiliation: Department of Cosmetics Chemistry, Academy of Cosmetics and Health Care, Warsaw, Podwale 13, 00-252, Poland.
authors.forename: J
authors.initials: J
authors.lastname: Arct
authors.affiliation: Department of Cosmetics Chemistry, Academy of Cosmetics and Health Care, Warsaw, Podwale 13, 00-252, Poland.
authors.forename: Anna
authors.initials: A
authors.lastname: Ratz-Łyko
authors.affiliation: Department of Cosmetics Chemistry, Academy of Cosmetics and Health Care, Warsaw, Podwale 13, 00-252, Poland.
authors.forename: M
authors.initials: M
authors.lastname: Mieloch
authors.affiliation: Department of Cosmetics Chemistry, Academy of Cosmetics and Health Care, Warsaw, Podwale 13, 00-252, Poland.
authors.forename: M
authors.initials: M
authors.lastname: Witulska
keywords: Curcuma (turmeric) extract; chromameter measurements; cosmetic formulation; sensory analysis; skin colour changes