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KMID : 0604520180440020183
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Journal of the Society of Cosmetic Scientists of Korea
2018 Volume.44 No. 2 p.183 ~ p.189
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The Blocking Effect of Sunscreen Materials on Blue Light
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Chung Sang-Uk
Lee Si-Eun
Choi Sun-Young
Moon Kwon-Ki
Lim So-Ra
Kim Hae-Kyoung
Park Jong-Ho
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Abstract
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Blue light is the highest energy wavelengths in the visible light region and induces skin aging and active oxygen. Studies on harmful mechanism of skin are under way. Research on blue light blocking materials in cosmetics and formulation studies are in the early stage, and the test methods related to blue light blocking measurement are not established. The blue light blocking efficacy was established by referring to the test method of the sunscreen in vitro test(COLIPA guideline, ISO 24443, FDA Final Rule on Sunscreen Testing and Labeling). The blue light blocking effect was evaluated for 17 kinds out of 27 kinds of sunscreen raw materials suggested in KFDA guideline. The Effect was 14.97% for zinc oxide and 16.32% for bishexyloxyphenol methoxyphenyl triazine, 35.47% for methylene bis-benzotriazolyltetramethylbutylphenol, and 65.96% for titanium dioxide. In addition, the effect of micro-titanium dioxide was twice as high as that of the nano-titanium dioxide. The results suggested that the light blocking effect test method can be used to search for blue light blocking materials and study cosmetic formulations.
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KEYWORD
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blue light, visible light. sunscreen, titanium dioxide, cosmetic
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