Rosemary extract is a natural ingredient derived from the leaves of the Rosmarinus officinalis plant. Commonly used in the USA, it serves as a potent antioxidant and preservative in food, cosmetics, and pharmaceuticals. Rich in bioactive compounds such as rosmarinic acid and carnosic acid, it helps protect against oxidation and microbial growth. In the food industry, it extends shelf life, while in skincare, it supports skin health due to its antimicrobial and anti-inflammatory properties. Additionally, rosemary extract is studied for its potential cognitive and cardiovascular benefits, making it a versatile component in various applications across different industries.