THE INKEY LIST’s Collagen Serum stars clever peptides called Matrixyl 3000 and Syn Tacks, which mimic the effect of natural collagen, keeping your skin looking plumper and smoother for longer. The formula also helps to boost collagen production, so your skin will look increasingly firm and supple in the long run too. Minimising the appearance of fine lines and wrinkles and targeting sagging, this skin-boosting potion is like an elixir of youth for your complexion.