Catechins are a class of flavonoids widely found in green tea and certain types of plants, known for their potent antioxidant properties. These polyphenols play a significant role in protecting the body against oxidative stress by neutralizing free radicals. Research indicates that catechins may contribute to improving cardiovascular health, supporting weight management, and enhancing cognitive function. Due to their unique chemical structure, catechins are also utilized in various cosmetic products for their ability to protect skin from environmental damage and promote overall skin health. In the food industry, they are often added as natural preservatives or colorants due to their antioxidant activity and stability.