PTT-6 is CALECIM’s proprietary active ingredient. It is derived from ethically sourced stem cells that are cultured in a stem cell laboratory. The stem cells are removed from the culture media leaving behind the exosomes, growth factors and other proteins that the stem cells have secreted. This secretion is called PTT-6. One ml of PTT-6 contains over 3,000 active growth factors, exosomes and proteins, making it the most concentrated growth factor / exosomes product in the market. PTT-6 is the key active ingredient in all CALECIM products.