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KMID : 0604520150410020097
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Journal of the Society of Cosmetic Scientists of Korea
2015 Volume.41 No. 2 p.97 ~ p.103
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A Comparison Study Between Image Analysis and Conventional Methods in the Evaluation of Asian Skin Color
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Park Hye-Kyong
Kim Nam-Soo
Moon Tae-Kee
Kim Bo-Ra
Jung Ho-Young
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Abstract
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Until recently, the three conventional evaluation methods, which are instrumental (Chromameterⓡ CR-400 and Mexameterⓡ M18) and visual assessments have been used frequently for skin color evaluation. However, we took notice the potential of image analysis as a new tool to evaluate color change of skin. To reveal the reliability of the image analysis for the evaluation of whitening agents, 34 healthy female volunteers with hyperpigmentation were recruited, and the selected volunteers applied the whitening products containing Vitamin C twice a day in the morning and evening and received iontophoresis treatments once a week for 8 weeks. The changes in hyperpigmentation evaluated by Chromameterⓡ, Mexameterⓡ and visual assessment were compared with the results from the image analysis. As with L* value trends of the analysis using Chromameterⓡ, the V value from the image analysis increased after applying the test products compared with baseline values. Furthermore, V value showed a positive correlation with L* value (r = 0.494, p < 0.01) and negative correlation with MI (r = - 0.683, p < 0.01) and VG (r = - 0.549, p < 0.01). Therefore, image analysis may be considered as an effective method to complement the limitations of visual assessment for whitening efficacy in Asians.
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KEYWORD
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image analysis, evaluating method, efficacy, skin color, cosmetics
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