It must be the Peptides! Not sure how this all works, all I know is that it works! I seems like it makes my skin feel tighter and gives it a glow it did not have before. I was putting on make-up over it and that went on very smoothly. It's only been a few weeks that I've used this product so I don't expect miracles but I can say that this face cream is really nice. You can use it as both a day and night cream and it gives your face a glowing appearance. I hope the improvement continues.