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KMID : 0363220220600080491
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Korean Journal of Dermatology
2022 Volume.60 No. 8 p.491 ~ p.498
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Disparities in Objective and Subjective Skin Types: Only Oiliness Shows Consistent Correlation
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Seo Ji-In
Ham Hye-in
Baek Ji-Hwoon
Shin Min-Kyung
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Abstract
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Background: The use of cosmeceuticals, cosmetics that are medically proven to improve certain skin qualities, hasbeen generalized to the public. While they were invented to selectively enhance targeted biophysical skin qualities,product selection is highly dependent on subjective perceptions rather than objective assessments.
Objective: To evaluate whether subjective perceptions can accurately characterize one’s skin condition, especially inthe Korean population, which shows a high interest in cosmetics and skin conditions.
Methods: Biophysical parameter measurements were obtained from the 2018 International Skin Characteristics DataBank Project conducted by the Foundation of the Korea Cosmetic Industry Institute. Participants were 220 healthySouth Korean adults. Each participant was asked to evaluate their own skin type in terms of sensitivity, hydration,oiliness, roughness, and thickness. The same subjects were objectively examined using bioengineering devices for therelated biophysical parameters. Significance was evaluated using the chi-squared test.
Results: Oiliness showed a significant correlation between subjective and objective skin assessments. Althoughsensitivity, hydration, roughness, and thickness showed positive relationships, none were statistically significant.
Interestingly, self-perceived skin texture was highly dependent on pore-induced bumpiness rather than intricate skinsurface topology. Also, uneven skin texture tended to be perceived as thick skin.
Conclusion: Subjectively assessed skin types may limit the precise characterization of the skin’s properties.
Therefore, biophysical measurements should be used to assess skin types, particularly with regard to sensitivity,hydration, roughness, and thickness. This Korean population showed no superiority at perceiving skin typescompared to subjects of previous studies.
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KEYWORD
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Bioengineering, Correlation of data, Diagnostic self evaluation, Skin physiological phenomena
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