Para-aminobenzoic acid (PABA) is an organic compound that belongs to the vitamin B complex group. It is a white, crystalline substance that is soluble in water and alcohol. PABA is naturally found in foods such as grains, eggs, and dairy products, and it plays a role in the synthesis of folic acid in the body. PABA is often used in sunscreens and skin care products due to its ability to absorb ultraviolet (UV) light. Additionally, it has been studied for its potential benefits in treating certain skin conditions and as a supplement for hair growth. However, its effectiveness and safety in these applications can vary.