COLOR RETENTION AND BLEEDING POTENTIAL OF A LIPSTICK 407 CONCLUSION This study quantifi es changes in overall color properties of the lips after application of a liquid lip color in a controlled usability study. The image analysis methods were effective Figure 4. Correlations between results of panel perception and objectively measured lip color properties. (A) Color retention and (B) bleeding potential. Bars: objectively measured levels of color retention or bleeding. Solid lines with italic data label: percentage of panelists who perceived the property “acceptable.”

JOURNAL OF COSMETIC SCIENCE 408 Figure 5. Quantifi ed lip color properties and their corresponding threshold of acceptability. (A) Color retention and (B) bleeding potential. Colored dots with tracing line: objectively measured levels of color retention or bleeding potential. Pink dots: sample results used in panel perception studies. Red line: the threshold level within which consumers would consider the levels of a color property acceptable.

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