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Effects of UV-filter Photostabilizers in the Photostability and Phototoxicity of Vitamin A Palmitate Combined with Avobenzone and Octyl Methoxycinnamate
Photochemistry and Photobiology ( IF 2.6 ) Pub Date : 2021-02-23 , DOI: 10.1111/php.13407
Marcela Silva Scarpin 1 , Camila Martins Kawakami 1 , Karen Cristina Rangel 1 , Karina de Castro Pereira 1 , Carolina Gomes Benevenuto 1 , Lorena Rigo Gaspar 1
Affiliation  

A challenge for cosmetic and dermatologic products is to develop new high-performance and safer anti-aging products based on new compounds to enhance the stability of retinyl palmitate combined with broad-spectrum UV-filters. Consequently, the aim of this work was to evaluate the effects of three often used avobenzone photostabilizers—ethylhexyl methoxycrylene (EHMCR), tris(tetramethylhydroxypiperidinol) citrate (TTMHP) and tris-biphenyl triazine (TBPT)—on the photostability and phototoxicity of the combination of avobenzone (AVO), octyl methoxycinnamate (OMC) and retinyl palmitate (RP). The photostability studies were performed by the exposure of formulations to UVA radiation. The phototoxicity was evaluated by the 3T3 neutral red uptake phototoxic assay (OECD TG 432). The addition of EHMCR, TBPT, and TTMHP in the formulations, with/or without RP, improved the photostability of AVO and RP, but EHMCR was the most effective in stabilizing RP. In the phototoxicity assay, the combinations AVO-OMC containing or not RP showed phototoxic potential. EHMCR and TTMHP reduced the phototoxicity of the combination AVO-OMC, whereas EHMCR also decreased the phototoxicity of the combination containing RP. Therefore, EHMCR might be used to the photostabilization of formulations of AVO-OMC with/or not RP, while TTMHP can be added to this photounstable UV-filter combination.

中文翻译:

紫外滤光光稳定剂对维生素 A 棕榈酸酯与阿伏苯宗和甲氧基肉桂酸辛酯的光稳定性和光毒性的影响

化妆品和皮肤科产品面临的挑战是开发基于新化合物的新型高性能和更安全的抗衰老产品,以增强棕榈酸视黄酯与广谱紫外线过滤剂的稳定性。因此,这项工作的目的是评估三种常用的阿伏苯宗光稳定剂——乙基己基甲氧基丙烯 (EHMCR)、三(四甲基羟基哌啶醇)柠檬酸盐 (TTMHP) 和三联苯三嗪 (TBPT)——对组合的光稳定性和光毒性的影响。阿伏苯宗 (AVO)、甲氧基肉桂酸辛酯 (OMC) 和棕榈酸视黄酯 (RP)。通过将制剂暴露于UVA辐射来进行光稳定性研究。通过 3T3 中性红吸收光毒性试验 (OECD TG 432) 评估光毒性。在配方中添加 EHMCR、TBPT 和 TTMHP,有/或没有 RP,提高了 AVO 和 RP 的光稳定性,但 EHMCR 在稳定 RP 方面最有效。在光毒性测定中,含有或不含 RP 的 AVO-OMC 组合显示出光毒性潜力。EHMCR 和 TTMHP 降低了 AVO-OMC 组合的光毒性,而 EHMCR 也降低了含有 RP 的组合的光毒性。因此,EHMCR 可用于具有/或不具有 RP 的 AVO-OMC 配方的光稳定性,而 TTMHP 可添加到这种光不稳定的紫外线过滤器组合中。而 EHMCR 也降低了含有 RP 的组合的光毒性。因此,EHMCR 可用于具有/或不具有 RP 的 AVO-OMC 配方的光稳定性,而 TTMHP 可添加到这种光不稳定的紫外线过滤器组合中。而 EHMCR 也降低了含有 RP 的组合的光毒性。因此,EHMCR 可用于具有/或不具有 RP 的 AVO-OMC 配方的光稳定性,而 TTMHP 可添加到这种光不稳定的紫外线过滤器组合中。
更新日期:2021-02-23
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