Lecithin is one of the essential nutrients for the human body, and the term lecithin usually refers to soy lecithin. The main functions of soy lecithin include: 1. It can repair damaged cell membranes and improve the body’s metabolic capacity, thus making the skin younger and having a certain anti-aging effect. 2. Lecithin can participate in the transport of cholesterol and triglycerides in the body, which can effectively regulate blood lipid metabolism and prevent the occurrence of cardiovascular system diseases. 3. It can also be used as a detoxifying agent to remove metabolic toxins from the body, which has the effect of lightening pigmentation and moisturizing the skin. 4. Lecithin can also decompose cholesterol in the bile, which has a certain effect on the prevention of gallstones.