Upconversion nanoparticles exhibit unique optical properties, making them attractive for applications in bioimaging, sensing, and disease management. However, their potential toxicity remains a significant concern. This review aims to provide a thorough analysis of the check here toxicity associated with upconversion nanoparticles. It investigates

Zinc oxide is a substance renowned for its remarkable strength to shield delicate skin. This soothing component has long been used in a range of skincare products, from sunscreens to diaper rash creams, due to its remarkable protective characteristics. Establishing a physical defense on the skin's exterior, zinc oxide effectively blocks harmful U