Para Aminobenzoic Acid (PABA) is a chemical compound commonly used in sunscreen and hair dye products, due to its ability to absorb UVB radiation. Alternative names for PABA include 4-Aminobenzoic Acid, Vitamin Bx, and Vitamin H1. It has also been referred to as p-Aminobenzoic Acid, para-Aminobenzoic Acid, and Aniline-4-carboxylic Acid. While PABA is primarily used for its UV-absorbing properties, it has also been noted for its potential therapeutic effects, including its ability to increase connective tissue strength and improve the health of skin and hair. Whatever the terminology used, PABA remains a key player in the beauty and health product industry.