Cosmeceutical Peptides like tripeptides (Pal KTTKS) stimulate collagen production which in turn thickens the skin and plumps wrinkles from within. Pal KTTKS – also known as Palmitoyl Pentapeptide-4, Matrixyl or Palmitoyl Oligopeptide-4 – is sometimes called ‘Cell Communicating Ingredients’, and has begun to appear in topical anti-aging skin care products. The results are similar to injected dermal fillers, but without the need for needles and without leaving foreign substances under the skin. Pal KTTKS is a technically advanced ingredient , so it’s fairly expensive and products that contain it are priced at the premium end of the market.