Upconversion nanoparticles exhibit unique optical properties, making them attractive for applications in bioimaging, sensing, and medical treatments. However, their potential toxicity remains a substantial concern. This review aims to provide a in-depth analysis of the toxicity linked with upconversion nanoparticles. It investigates various aspects

Zinc oxide is a compound renowned for its remarkable power to safeguard delicate skin. This soothing component has long been used in a number of skincare products, from sunscreens to diaper rash creams, due to its outstanding protective properties. Creating a physical shield on the skin's exterior, zinc here oxide effectively blocks harmful sunli