UV-Protective Sunscreens - Nanozymes / Alfa Chemistry

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UV-Protective Sunscreens

Introduction

As we all know, UV-protective sunscreens play a very important role in our lives. Using UV-protective sunscreens can not only effectively reduce the damage caused by UV to the skin, but also slow down the rate of skin aging. Plus, since UV are the leading cause of skin cancer, UV-protective sunscreens can reduce the risk of skin cancer. Traditional sunscreens mainly contain ZnO or TiO₂. These metal oxides can reflect or scatter harmful UV, protecting the skin from oxidative damage. However, both ZnO and TiO₂ are semiconductors with excellent photocatalytic activity. Under the UV radiation, toxic reactive oxygen species (ROS) are produced, causing oxidative damage to the skin. To alleviate this problem, nanozymes with powerful antioxidant properties have been developed for use in UV-protective sunscreens. Antioxidant nanozymes have excellent ability to scavenge ROS. The introduction of antioxidant nanozymes into sunscreens can effectively improve skin damage caused by UV, making them have broad application potential in UV-protective sunscreens.

Applications

Nanozymes can be used for sunscreens against UV damage. Among them, cerium-based nanozymes with strong antioxidant properties are widely used. For instance, Qu and Ren's groups introduced cerium-based nanozyme into the ZnO sunscreens. They selected CeO_x nanoparticles with excellent antioxidant activity and assembled ZnO and CeO_x nanoparticles to form ZnO/CeO_x hollow microspheres (ZnO/CeO_x HMS). The obtained ZnO/CeO_x HMS can provide broad UV spectrum protection. And benefiting from the synergistic effect of CeO_x's hollow structure and antioxidant enzyme mimicking activity, it can effectively remove ROS generated under UV irradiation, thereby effectively protecting cells^[1]. In addition, nickel-based nanozymes, selenium-based nanozymes, and gold-based nanozymes are also used in UV-protective sunscreens. Adding these antioxidant nanozymes to UV-protective sunscreens can more effectively improve skin damage caused by UV rays.

Alfa Chemistry can offer a wide variety of antioxidant nanozymes, which can be used in UV-protective sunscreens. We will offer the most suitable nanozymes according to customer's detailed requirements. At the same time, we also offer product customization. If you have any questions or needs, please don't hesitate to contact us. Alfa Chemistry will provide you with the most professional service.

Reference

Qu, X. G.; et al. Confinement of reactive oxygen species in an artificial-enzyme-based hollow structure to eliminate adverse effects of photocatalysis on UV filters. Chem. - Eur. J. 2017, 23, 13518-13524.

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