Tripeptide-1, also known as GHK (Glycyl-Histidyl-Lysine), is a signal peptide naturally present in the body. It is one of the oldest studied peptides in cosmetics, with scientific documentation dating back to the 1970s.
In scientific literature, Tripeptide-1 is linked to supporting mechanisms involved in maintaining skin structure. Its GHK sequence mimics the action of a natural extracellular matrix fragment and is associated, according to available data, with supporting collagen, elastin, and glycosaminoglycan synthesis, essential structural components of the dermis themselves linked to firmness, suppleness, and visible skin hydration.
Beyond this association with the extracellular matrix, Tripeptide-1 is documented for its role in collagen fiber organization, linked to visible skin quality over time. It is also associated, according to available data, with skin comfort.
Studies document visible improvement in firmness, apparent density, and skin texture after regular application. Its profile is associated in literature with a complementary effect with other peptides, notably Palmitoyl Tetrapeptide-7 from Matrixyl® 3000 with which it forms a well-studied synergistic complex.
Its endogenous concentration decreases with age, an observation correlated in literature with visible signs of aging, explaining the interest in its topical use in anti-aging skincare.
In summary, a fundamental cosmetic active associated in scientific literature with supporting skin structure and visible firmness and density appearance.
