This Kevin Murphy Thick Again Leave-In Thickening Treatment is formulated to address the needs of thinning hair. It works to visibly thicken the appearance of hair strands, promoting a fuller look with continued use. Apply this concentrated formula to damp or towel-dried hair, focusing on the roots and throughout the scalp area. It is designed to be left in the hair to provide ongoing benefits without the need for rinsing, integrating seamlessly into your daily styling routine.