Its main action is the moisturizer (moisturizer and emollient) it offers to the skin. Some of the components of lecithin (phospholipids) have the property of "trapping" the humidity of the air, thus significantly enhancing the moisturizing effect of cosmetics. So you will find lecithin as an ingredient in our products for skin reconstruction.
One of the amazing "gifts" of lecithin is that it penetrates deep into the skin. Thus, if a cosmetic is enriched with other nutrients (eg vitamins), lecithin acts as a "carrier" that transports them to cells and tissues.