Dong, Xue Woo, Chaeheon Lee, Myunghee Shin, Kyounghee Yu, Hak Ki Choi, Jae-Young 2025-08-20T06:00:50Z 2025-08-20T06:00:50Z 2025-08-20 2025-11 1387-1811 https://pubs.kist.re.kr/handle/201004/152976 The stability and effectiveness of organic UV filters remain key challenges in sunscreen formulations due to their potential for degradation and skin penetration. In this study, we developed a BS@SiO2-30 % composite, in which bis-ethylhexyloxyphenol methoxyphenyl triazine (BEMT) was encapsulated within a porous SiO2 matrix and coated with a hydrophilic SiO2 layer. This encapsulation process enhanced photostability, and formulation compatibility while preventing skin penetration of BEMT. The composite exhibited an SPF value of 41.75, significantly surpassing the control, demonstrating superior UV protection. Additionally, stability tests confirmed that the hydrophilic SiO2 coating facilitated even dispersion in aqueous formulations, addressing the limitations of conventional UV filters. These findings highlight the potential of SiO2-based encapsulation as an effective strategy for improving organic UV filters, paving the way for next-generation, high-performance, and photostable sunscreen formulations. English Elsevier BV Optimized encapsulation of bis-ethylhexyloxyphenol methoxyphenyl triazine (BEMT) in porous silica for enhanced UV protection and stability Article 10.1016/j.micromeso.2025.113763 1 Microporous and Mesoporous Materials, v.397 Microporous and Mesoporous Materials 397 N scie scopus 001538392800001 2-s2.0-105010197802 Chemistry, Applied Chemistry, Physical Nanoscience & Nanotechnology Materials Science, Multidisciplinary Chemistry Science & Technology - Other Topics Materials Science Article IN-VITRO FILTERS SUNSCREENS ZNO UV filter Encapsulation Porous silica Bis-ethylhexyloxyphenol methoxyphenyl triazine Sunscreen formulation Photostability