Upconversion nanoparticles demonstrate 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 toxicity connected with upconversion nanoparticles. It examines various aspe

Zinc oxide is a compound renowned for its remarkable power to safeguard delicate skin. This soothing ingredient has long been utilized in a range of skincare products, from sunscreens to diaper rash creams, due to its remarkable protective characteristics. Establishing a physical barrier on the skin's top layer, zinc oxide effectively blocks harm