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