Product description spectral. The latest solution of f7 astressin b is a technology that is years ahead of its time. DS Laboratories is the first biotechnology developer to synthesize and market this innovative peptide into a cosmetic product. Spectral. f7 offers a completely new action mechanism and is therefore an important new tool in a program for maintaining healthy hair. This peptide has received a comprehensive media reporting due to remarkable results observed in laboratory animals. Further tests by DS Laboratories on voluntary subjects resulted in a surprisingly high effectiveness. Because this result was obtained by a completely new modality, spectral. f7 is designed to be used as a booster in conjunction with existing treatments. For shaking hair in early stages, it can be used as a single line therapy. It is very convenient to use and the product leaves a pleasant texture, not greasy or sticky. Spectral.F7 is an advanced hair enhancement tool and a groundbreaking formula containing Astressin-B, a strong peptide that helps with the end of stress-related hair problems. Proharin-B4 is also used to revitalise hair strands for healthy, stronger looking hair. Spectral.F7 is a gentle water-based formula that leaves no oily or sticky residue and has been developed for both men and women.