Application of Water-Based Polyurethane in Sunscreen Products

• 作者: Zhou Meng Sophia Sun Li Bangbang Shen Jixie Ji Xueshun
• 来源期刊: 日用化学品科学（英文版）
• 年，卷（期）: 2022,（1）
• 所属期刊栏目: Technologies
• 页码范围: 70-75
• 页数: 6页
• 语种: 英文

摘要

With the development of the economy and improving quality of life, sunscreen products have become an indispensable part of people's daily lives. However, traditional sunscreen products have several shortcomings, such as sticky skin feel, clumping, and skin irritation. In addition, the price of sunscreen products is relatively high due to the expensive ingredient: UV absorbers. To solve the above problems, a film-forming agent had been added to the general sunscreen formula to synergistically improve the consumer experience without causing any adverse side effects. It is crucial to achieve sun protection factors (SPF) booster through other cheaper agents. This article mainly studies and verifies the synergistic impact of Carfil? UV35 (a water-based polyurethane product) in sunscreen products and discusses its application scope. The hen's egg-chorioallantoic membrane assay (HET-CAM) test and the human patch test were used to verify its mildness to the skin. Results also showed that Carfil? UV35 could effectively improve the water resistance of sunscreen products. What's more, the SPF improvement test shows that only 5％ Carfil? UV35 can increase the SPF value from 15 to 30. In short, the research in this article can provide specific ideas for the formulation design of sunscreen products and is of great significance to the application and SPF increase of water-based polyurethane film-forming agents in sunscreen cosmetics.