The shelf life of high-quality American soft phospholipids is generally three years at room temperature. If it's not expired, you can take it. Expired lecithin can not be taken orally, but can be used externally, such as treating chilblain and scleroderma. Some people say that it is not advisable to use it for beauty, because lecithin also has the difference between soybean and egg yolk. Soybean lecithin, almost refined soybean oil, have you ever seen soybean oil applied to your face for beauty? "Not all milk is lean meat", haha, that's the truth. Only egg yolk lecithin can be added to beauty and skin care products. The price of egg yolk lecithin is ten times that of soybean lecithin. Some domestic lecithin ingredient lists are marked with soybean lecithin and egg yolk lecithin ... This is a product of liar company. The mixed use of two kinds of lecithin will greatly shorten the shelf life, and the product is turbid and easy to solidify, which is not conducive to absorption. In China, consumption needs intelligence to be safe.