PABA is important for healthy skin and hair, and aids in the absorption of vitamin B5 and folic acid in the body. It enhances the effects of many hormones in the body by delaying their breakdown in the liver. It is important for red blood cell production, as well as for the breakdown and utilization of protein in the body. It also appears to help reduce the rate of accumulation of abnormal fibrous tissue in the body. It frequently is utilized in sunscreens to help protect against sunburn.