Upconversion nanoparticles demonstrate unique optical properties, making them attractive for applications in bioimaging, sensing, and therapy. However, their potential toxicity remains a substantial concern. This review aims to provide a comprehensive analysis of the toxicity associated with upconversion nanoparticles. It investigates various aspec

Zinc oxide is a compound renowned for its remarkable strength to safeguard delicate skin. This soothing component has long been utilized in a range of skincare products, from sunscreens to diaper rash creams, due to its check here outstanding protective properties. Establishing a physical shield on the skin's top layer, zinc oxide effectively ref