Never been opened. Full size 4oz should last you 3 months! Stimulates Strengthens Thickens Meet the only drug-free spray clinically proven to support healthy hair growth. This product is a botanical-based nutrient infusion for the scalp, fueling fatigued follicles and nurtures new, fragile hairs so they thicken and thrive. Combining patented Alpha + Gamma Keratins and a Biomimetic Signal Peptide, the Flourish Density Booster is ideal for hair loss prevention or mild to moderate hair thinning. Color-safe, paraben-free, vegan and gluten-free.