Our Nick Chavez Beverly Hills Plump n Thick is an ultra-rich thickening shampoo, which encourages thicker, fatter, younger-feeling hair. It contains a combination of collagen, botanicals and anti-oxidants to enrich your hair like never before. This thickening shampoo is one of our best hair thickening products available. Feel the plumpness after just one use. And with THIS size, you’ll be using it over and over and over again! Will not strip hair color. pH balanced. Plump 'N Thick Thickening Shampoo.