The main active ingredient in here is lecithin (Phosphatidylcholine). Lecithin is the natural component of living cell membrane. Therefore it is readily aborbed by skin and is excellent for skin water reservoir. So this product is very moisturizing.
There is no clear definition for the ingredient neuropeptides. Dr. Perricone claimed that neuropeptides are peptides released by brain cells as intercellular messengers. While manipulating the neuropeptides, neurotransmitters and hormones that are in the brain to help slow the aging process.
However the reality is that the size of typical peptides are too large to be absorbed through skin pores and reach epidermis. Epidermis is the layer beneath the surface of skin (dermis) and it is where collagen and elastin proteins reside. If the peptides can't be delivered there, they are simply wasted. Besides they are at the bottom of the ingredient list, which means there are not a lot of them.
The ingredient DMAE has only reported to prevent aging based on a small study by Dr.Perricone himself, the manufacturer of the brand. So the claims are not solidly supported.
There a few antioxidants to prevent first signs of aging. But honestly, for such a steep price I was expecting more. For this I took away one half star.
Safety alert: Elevated
review based on scientific information of the product ingredients.