Retinol, peptides, and antioxidants are essential skincare ingredients that help improve skin elasticity. Retinol stimulates collagen production and promotes cell turnover. Peptides are small proteins that signal the skin to produce more collagen and elastin, thus improving its elasticity. Antioxidants, such as vitamins C and E, protect the skin from free radicals and oxidative stress, preserving the collagen and elastin fibers.