Upconversion nanoparticles demonstrate unique optical properties, making them attractive for applications in bioimaging, sensing, and medical treatments. However, their potential toxicity remains a significant concern. This review aims to provide a in-depth analysis of the toxicity connected with upconversion nanoparticles. It explores various aspe

Zinc oxide is a mineral renowned for its remarkable power to protect delicate skin. This calming ingredient has long been employed in a number of skincare products, from sunscreens to diaper rash creams, due to its outstanding protective properties. Forming a physical shield on the skin's surface, zinc oxide effectively absorbs harmful sunlight,