PABA, or para-aminobenzoic acid, is a compound that is sometimes classified as a member of the B-vitamin family. It plays a role in the synthesis of folic acid and is found in various foods, including whole grains, eggs, and dairy products. PABA is also known for its potential benefits in skin health and is often included in some sunscreens. While PABA is not considered an essential nutrient for humans, it is thought to support the body's metabolism and may have antioxidant properties. Some people take PABA supplements for various health reasons, but scientific evidence on its effectiveness is limited.