Nanotechnology-Enhanced Sunscreens: Balancing Efficacy, Safety, and Environmental Impact.

Sunscreen protects skin from harmful Ultra Violet (UV) rays, preventing skin diseases like cancer and premature aging. This review explores the role of nanotechnology in enhancing sunscreen formulations by incorporating green and sustainable ingredients. Nanoparticles such as titanium dioxide and zinc oxide effectively reflect UV rays, improving protection while minimizing white residue, thereby enhancing aesthetics, stability, and efficacy. Recent advancements in formulation include lipid-based and polymer-based nanosystems that improve the delivery of active ingredients, offering multifunctional benefits. Additionally, modern sunscreens integrate anti-aging and antioxidant properties, reflecting the trend toward hybrid formulations with multiple skin benefits. The review also examines recent patents, highlighting innovations in nanotechnology-driven sunscreen formulations and delivery systems. Safety and regulatory concerns are critically analyzed, focusing on public perception of nanoparticles and their environmental impact. Issues such as manufacturing challenges and consumer hesitancy toward nano-scaled formulations due to safety considerations are also discussed. While nanotechnology presents significant potential in advancing sun protection, the review underscores the importance of balancing innovation with safety and sustainability. Ultimately, it serves as a guide for future research directions in nano-based sunscreens, advocating for responsible and informed development in the field.