L-α-phosphatidylserine (Soy, 99%) (sodium salt) is widely used in dietary supplements to support cognitive function and memory, particularly in aging individuals. It plays a role in maintaining healthy brain cell membranes and enhancing neurotransmitter activity. Additionally, it is utilized in sports nutrition to help reduce exercise-induced stress and improve recovery. In skincare products, it is incorporated for its ability to enhance skin barrier function and retain moisture. This compound is also studied for its potential in managing stress and promoting mental clarity. Its applications extend to research settings, where it is used as a model phospholipid in biochemical studies.