Tensage Intensive Serum 50GROWTH FACTOR SCA 50 Biorepair Index An intensive boosted treatment serum with highly concentrated growth factor benefits for fast, dramatic improvement in the visible signs of moderate to severe aging. Tensage Intensive Serum 50 jump starts skin rejuvenation to deliver visible results quickly. This product pairs SCA Biorepair Technology with peptides, skin firming and brightening agents, for fast, dramatic improvements to the skin.