Benzophenone-4 (CAS No. 4065-45-6) is a highly effective sunscreen agent widely used in the personal care and cosmetics industry for its ability to absorb ultraviolet (UV) radiation, providing robust UV protection. It is commonly found in cosmetics, after-shave gels, hair sprays, hair dyes, and shampoos, where it helps safeguard skin and hair from sun damage. In skincare, it enhances UV protection in creams, lotions, and makeup, while in haircare, it shields against UV-induced fading and damage. Known for its versatility, water solubility, and stability, Benzophenone-4 is a preferred ingredient for manufacturers aiming to deliver high-quality, sun-protective products.