A peptide-rich, multifunctional serum helps reduce the visible signs of aging and keeps skin looking healthy. Buy Protein Booster Skin Serum from Jack Black here. The silky liquid texture allows powerful. . A peptide-rich, multifunctional serum that penetrates to reduce the visible signs of aging and keeps skin looking healthy. The silky liquid texture allows. Packed with clinically-tested, anti-aging ingredients, this high-performance serum helps reduce the. jack black protein booster skin serum review. Syn-AKE** is an. Jack Black Protein Booster Skin Serum contains Matrixyl,* a multi-action peptide that helps reduce the appearance of wrinkles by up to 45%.