Pepti-Elastin Elastin is the counterpart to collagen. It is made up of fibers that provide the stretch and snap (elasticity) in our skin. Elastin forms a meshwork of fibers that acts like spandex for the skin. Last Update: May 11, 2019 October 30, 2018 2152Technical DocumentsRelated Knowledge Base Posts -Rejuvenator or RetinolPepti-ToneLactic 5% + Collagen