DS Laboratories Spectral DNC-S serum for fast hair growth 60 mlHair care with an effective mixture of Aminexil, copper peptides and caffeine . DS Laboratories Spectral DNC S serum for fast hair growth is based on the principle of advanced biotechnologies that make the most of the potential of active substances. By placing the ingredients in two separate chambers in the package, it allows the individual ingredients to be contained in the highest possible concentration for effective performance. The two component