Teach you a method, how to identify: 1. The smaller the molecular weight, the better. When the human body absorbs collagen, molecular weight is a very key factor. Experts pointed out that the molecular weight of ordinary collagen is about 300,000-500,000, and the most suitable molecular weight for human absorption is 2,000-4,000. Therefore, it is difficult for some cosmetics to pass through the surface layer of skin without decomposing collagen, let alone further reach the dermis. Be very selective when choosing. For some oral nutrition and health products containing collagen, the better collagen products on the market adopt low-temperature extraction technology to decompose high-molecular collagen which is not easily absorbed by human body, so as to achieve more effective absorption and utilization. 2. The higher the purity, the better. At present, there are so-called collagen foods, drinks and skin care products on the market, most of which are advertised as collagen products, but they are actually just ordinary collagen. When choosing oral collagen products, we must choose pure collagen, whose efficacy is more than three times that of ordinary collagen, which is more conducive to human absorption and better cosmetic effect. 3. In order to screen effective biological collagen from low-temperature extraction products, low-temperature extraction technology must be adopted to avoid the destruction of high-molecular collagen in the manufacturing process. The molecular weight of elastin collagen is less than that of ordinary collagen 10- 100 times, and the purity is 95.7%. Elastin collagen can directly participate in the synthesis of human collagen without gastrointestinal digestion and absorption. Faster absorption, higher absorption rate! The product is rich in 17 amino acids and trace elements.