TETRAPEPTIDE-2.

This biomimetic peptide operates by simulating thymopoietin, often referred to as a 'youth hormone,' to stimulate comprehensive skin regeneration. It notably enhances the synthesis and proper assembly of crucial structural proteins, including Type I and XIV collagen, and elastin, by boosting the production of Fibulin 5 (FBLN5) and Lysyl Oxidase-like 1 (LOXL1). This reinforces the skin's intrinsic resistance to gravitational forces and external aging factors. Functioning as a potent antioxidant, Tetrapeptide-2 effectively mitigates free radical damage and oxidative stress by inhibiting the Aryl Hydrocarbon Receptor (AHR) and activating Nuclear Factor-Erythroid 2-Related Factor-2 (NRF2). Its benefits extend to skin brightening and anti-hyperpigmentation by inhibiting melanin production and tyrosinase activity. Furthermore, it acts as an enzyme inhibitor to prevent collagen degradation, facilitates robust connections between cells and the extracellular matrix, stimulates keratinocyte activity for improved cell renewal, and promotes Langerhans cell maturation, thereby strengthening the skin's immune system and defenses. The peptide also contributes to enhanced skin hydration by increasing hyaluronic acid production.