Discover This Week’s FREE Samples. Freeosk is offering FREE Nexxus Color Assure Shampoo & Conditioner Sample at Sam’s Club locations from 11/19/2021 through 11/23/2021. Nexxus Color Assure Shampoo and Conditioner for color-treated hair helps moisturize and enhance the vibrancy of colored hair. If you want to get this freebie, click on the “Get FREE” button, find a location near you and head out to the store. Download the Freeosk app for Android or iPhone so you can redeem the samples at the Freeosk location.