Hair Loss Booster Bundle Proactive & Reparative for Men & Women Spectral DNC-N. This topical booster from DS Laboratories includes the Spectral DNC-N and Spectral F7 topicals that are great for anyone experiencing thinning hair and stages of hair loss levels 2-3 this is approx. DNC-N is the first topical hair-loss treatment to employ Nanoxidil, […]