Now men & women in treatment for thinning hair can add astressin-B, a complex new peptide, to maximise hair-follicle benefits, because Spectral. F7 is the first solution to incorporate this protein fragment for human use in a topical booster agent. DS Laboratories Spectral. F7 Efficacy Booster Agent with Astressin augments primary therapies like Spectral. DNC-N® or minoxidil, & it can serve as an effective st&-alone treatment in early stages of thinning. In a recent clinical trial, the astressin-B peptide: Blocks receptors for corticotropin-releasing factor, involved in the stress response, in laboratory animals. Influences hair health when stress hormones are over-expressed. Performs well as a st&-alone therapy to treat stress-induced cases. Results from the trial mean that astressin-B offers a powerful new mechanism of action to treat atrophic follicles. Directions: Apply 10 sprays of DS Laboratories Spectral. F7 Efficacy Booster Agent with Astressin once per day as a booster or twice per day as a primary treatment.