Book excerpt: Cosmeceuticals – skin care products that fall between a cosmetic and a pharmaceutical, with active ingredients that counter skin aging and promote skin rejuvenation – are an invaluable adjunct to the cosmetic dermatologist or plastic surgeon performing minimally invasive aesthetic procedures. This guide from expert researchers and practitioners explains how best to integrate the potential of cosmeceutical products into the best international clinical practice, with new chapters to cover the very latest developments in this area. The Series in Cosmetic and Laser Therapy is published in association with the Journal of Cosmetic and Laser Therapy.