1. Molecular weight: The smaller the molecular weight, the easier it is to absorb collagen peptides. The smaller the molecular weight, the better the absorption. Studies have proved that when the molecular size is between 1000-3000 daltons, it can enter the human body circulation within two hours, and the absorption rate is over 90%! 2. High-quality polypeptide, safe and unburdened collagen supplement needs to take collagen peptide for a long time, which puts high demands on the quality of collagen peptide products: low fat or zero fat, without other harmful impurities. Products must strictly pass the national standards to ensure the health of collagen supplements. 3. Adding anthocyanins or vitamins, the synergy is like supplementing vitamin D3 while supplementing calcium, and supplementing anthocyanins or vitamins while supplementing collagen peptides. Anthocyanin is also an essential nutrient element for collagen synthesis. Supplementing anthocyanin with collagen peptide can promote collagen synthesis. Dietary intake of collagen peptide can improve skin moisture and softness, reduce fine lines, prevent deep wrinkles and improve skin smoothness. It needs to be clear that the effect of oral collagen peptide varies with time. Be sure to choose the right professional collagen peptide products to make up enough time and quantity!