DermaPrime Plus Reviews : Hyaluronic acid, also known as HLA, is a fatty acid that is used to help lock in moisture. Its so effective; many dermal fillers use HLA to help people retain a youthful glow. According to the Department of Dermatology and Allergology, Hyaluronic Acid was associated with the reduction of wrinkle depth on your skin. This all depends on your skin tone and what youre looking to do with your toner.