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KMID : 0604520230490020177
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Journal of the Society of Cosmetic Scientists of Korea
2023 Volume.49 No. 2 p.177 ~ p.182
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The Study of Age-related Skin Pigmentation Changes in Korean Female
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Lee Myeong-Ryeol
l Jung Yu-Chul
Suh Byung-Fhy
Kim Eun-Joo
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Abstract
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Since facial skin pigmentation is one of the visual characteristics of skin aging, it is important to evaluate skin pigmentation in the cosmetics and aesthetic fields. Several groups have investigated and developed the image analysis methods for skin pigmentation and some of the groups reported the age-related changes of the number and size of facial pigmented spots. However, they didn’t show the changes of the number and size of pigment spots by defined size, and there is no report for Korean female regarding pigmentation. A total of 194 Korean females aged 20 ~ 79 (48.97 ± 17.11 years) were analyzed for the number, size, and intensity of pigmented spots using various filters such as large high-pass filter and median filter in their digital facial images. There were significant correlations between age and total pigmented spot number (No.), size, and intensity (I) (pearson’s correlation coefficient r = 0.688, r = 0.645, r = -0.563), and significant correlations were also observed between the number and intensity of pigmented spots of different sizes. According to the ANOVA results, there were significant differences in the percentage of spot size of 2 ~ 4 mm2 and > 20 mm2 between 20’s and 70’s. In other words, with aging, pigmentation increases in the facial skin, and the large increase in pigmentation is particularly noticeable in Korean women.
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KEYWORD
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pigmented spot, image analysis, aging symptom
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