One of the most popular anti-aging serums right now at Sephora, Kate Somerville Deep Tissue Repair with Peptide K8 ($150.00, Amazon.com) certainly sounds advanced and enticing, with “peptide K8″ and “patented HSC complex” to make skin “youthful, healthy, and fresh.”  But what does current research say about the ingredients?  Read on to find out… Palmitoyl oligopeptide: Not my favorite peptide There are a number of peptides on the market right now (palmitoyl pentapeptide-3, Matrixyl3000® and... read more