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KMID : 0604520200460020179
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Journal of the Society of Cosmetic Scientists of Korea
2020 Volume.46 No. 2 p.179 ~ p.184
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Study on the Classification and Improvement of Dehydrated Skin under Warm Air Heating Condition
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Kwon Oh-Sun
Kang Hyun-Jong
Han Seung-Min
Yoon Ji-Seon
Cho Woong-Hee
Oh Joo-Young
Lim Jun-Man
Song Young-Sook
Park Sun-Gyoo
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Abstract
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Elasticity and softness of the skin depend on the level of moisture present in the stratum corneum, which is known to be affected by various environmental changes, such as cold and hot winds and dry environments. However, not many studies have been conducted on changes in skin moisture and the degree of recovery due to individual skin differences. In the present study, we aimed to investigate the effect of warm air heating on skin hydration levels and develop moisturizing formulas to improve lowered skin hydration levels. In order to deliver warm air heating condition, heating dryer (40 ℃, 6 m/s, 30 cm apart from forearm) was applied into inner forearm of healthy subjects (male: 10, female: 39, age: 25 - 63) Among 49 subjects, 26 subjects showed significantly lowered skin hydration levels until 30 min after warm air heating exposure (lowered group). In addition, moisturizing cream with high water holding capacity was applied to forearm of 10 subjects in lowered group for 3 weeks and skin hydration levels after warm air heating were significantly improved at the levels of before application of warm air heating. From this study, we found out that there is a skin type that skin hydration levels are significantly decreased under warm air heating condition (dehydrated skin) and this dehydrated skin can be improved by moisturizing formulas with high water holding capacity.
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KEYWORD
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skin, hydration, heating, water holding capacity
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