The Bumble and bumble Thickening Serum is your ticket to thicker, stronger strands.
Created especially for those with lifeless, fine and thinning hair, this nightly leave-in treatment will boost fullness. It fattens and fortifies the strands over time to boost natural thickness, resulting in some seriously glamorous hair.
Before bed, dispense about 2 or 3 pumps of serum into the hands and work into the roots and through the hair. Those with longer hair may need a little more to make sure it’s smoothed through right to the ends. If your hair is ultra fine, use twice daily.