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