Flourish Density Booster is a potent, botanical-based nutrient infusion for the scalp. It fuels fatigued follicles and nurtures new, fragile hairs so they thicken and thrive. A potent, 100% drug-free, botanical-based nutrient infusion for the scalp. It fuels fatigued follicles and nurtures new, fragile hairs so they thicken and thrive. Combining patented Alpha + Gamma Keratins and a Biomimetic Signal Peptide, this product and the Hair Rejuvenation Treatment regimen are best for mild to moderate hair thinning and those seeking a natural approach to nourish the scalp and thicken each hair.