1. 🧴 Cosmetics and Personal Care Products (Core Application)

As a broad-spectrum sunscreen agent: It is one of the most widely used UVA sunscreen agents currently available, effectively protecting against long-wave ultraviolet radiation that causes skin photoaging and deep damage. It is usually combined with UVB sunscreens (such as the one you inquired about, 5466-77-3) to achieve comprehensive UV protection.

Used in various products: In addition to sunscreens, it is also commonly found in moisturizers, BB creams, lipsticks, and other daily skincare products, providing additional UVA protection.

2. 🔬 Scientific Research

Photochemistry and Photostability Studies: Due to its relative instability under light exposure, it is often used as a model compound to study how to improve its persistence in formulations by adding other stabilizers (such as octocrylene) or using microencapsulation technology.

Toxicology and Environmental Science: As a potential research subject for endocrine disruptors, its effects on human cells and aquatic environments (such as zebrafish) are being explored. It is also one of the personal care product ingredients analyzed for residues in the environment.

3. 💡 Emerging and Potential Applications

Functional Materials Research: A small amount of research explores its application in specific sunscreen textiles or as an additive to improve the photostability of certain materials.

Pharmaceutical Preparations: As one of the active ingredients, it appears in approved compound sunscreen products (such as Anthelios 20).