Question: what is the difference between the ordinary buffet and buffet with copper?
Answer: What is the difference between “Buffet” and “Buffet” + Copper Peptides 1%? ... “Buffet” is not an oil-free formula, whereas “Buffet” + Copper Peptides 1% is oil-free. The Ordinary claims that the addition of Pure Copper Peptides further encourages collagen production, but I think jury is out on this.