I formerly used the Baby Quasar, Pure Silk with my LED light therapy. I have since replaced it with this product. The Pure Silk product is very good, but has a high percentage of hyaluronic acid. I am using a prescription hyaluronic acid preparation, thus have determined the Pure Silk is redundant.  I've read that a rich copper peptide preparation should be blue or green blue. In any event, this product has been well received by my skin. I will also take an opposing view from other reviewers insofar as I find the preparation to be entirely non-occlusive. I am prone to rapid pore clogging, and this product will not clog pores. I might also add I use this product in conjunction with two or three additional cosmeceuticals. As such, no direct attribution can be made as to efficacy. That said, I would highly recommend this product. It is important for me since I do multiple ablative and non-ablative procedures annually and cannot use preparations such as stabilized vitamin C to promote healing.