2 Pack For those who want fuller-looking and thicker-feeling hair Pantene NutrientBlends Hair Volumizer Thickness Multiplier Leave In Treatment is a great option. Made with Bamboo Root Amplifying Treatment this leave in hair thickening treatment delivers immediately noticeable fuller-looking and thicker-feeling hair in just one bottle. Plus the formula is safe for chemically treated hair. Root Amplifying Treatment Pantene s hair volumizing serum helps thicken existing hair strands leaving hair looking thicker and fuller. Experience Pantene s nutrient infused Root Amplifying Treatment with a breezy energizing fragrance. The formula penetrates strands and helps strengthen hair s resilience against breakage. 2 Pack