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KMID : 0604520150410030189
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Journal of the Society of Cosmetic Scientists of Korea
2015 Volume.41 No. 3 p.189 ~ p.199
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Stability and Sun Protection Efficacy of Sunscreens Based on the Solubility and a Combination of Organic UV Absorbers
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Yeon Jae-Young
Hong Seung-Deok
Choi Se-Bum
Kim Ta-Gon
Lee Cheong-Hee
Lee Sang-Gil
Pyo Hyeong-Bae
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Abstract
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In this study, we have investigated the stability of sunscreens based on the solubility of organic UV absorbers in the oil and sun protection efficacy of the products composed of a combination of organic UV absorbers to develop more stable and efficient sunscreen products. Results showed that the solubility of the organic UV absorber and stability were varied depending on the type, storage conditions and concentration of oil. It was also observed from the products in the emulsion type. Various UV absorbances were determined to the products composed of the combination of organic UV absorbers. In some combinations, a synergistic effect was observed to make an increase in absorbance compared to a single component. In other cases, specific synergistic effect was displayed only when combined with the particular component. In addition, the storage condition also affected the sunscreen efficacy. In conclusion, this study confirmed that there are various factors which could affect the UV-blocking efficiency of sunscreen products.
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KEYWORD
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organic UV absorber, sun protection efficacy, stability, solubility, combination
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