boldify 3x biotin hair thickening serum - get thicker hair day one - natural 3-in-1 hair retention, leave-in conditioner & plumping blow out treatment - healthy looking hair growth - 4oz boldify benefit from your blowout! prep & protect clean, damp hair for blow drying with the biotin & botanical fortified leave-in. puts the emphasis of care back into haircare! frizz defying formula with detangling & smoothing benefits. achieve manageability, softness and shine while maintaining a healthy scalp. protects color vibrancy from fading and works as a shield for heat styling.