Leave on the shelf in favor of prescribing. peptides Copper peptides, which are building blocks for cell renewal, are a new trend in cosmeceuticals. They are touted as a powerful anti-aging ingredient that can help your skin Procellis Skin Creamto produce more collagen, giving a more youthful appearance and fatter. Pros: Peptides having more than one charm because they promise what other products do not, says Obagi. Cons: However, no investigations have shown that the peptides work. "The problem is that the skin is a good barrier," Obagi says that copper peptides in an expensive cream are not even able to penetrate the surface. The good news: Cosmeceuticals, such as those containing hydroxy acids and vitamin C, are excellent choices for your skin, Obagi says. Note that moisturizers can not perform miracles, but tried and true cosmeceuticals can offer the benefits of a healthier and younger looking skin with the feel of a luxury cream.