Costco cuts $3 off on NEXXUS Therappe Shampoo and $4 off on Humectress Conditioner now, bringing the price down to $13.99 for Therappe Shampoo and $20.99 for Humectress Conditioner. Nexxus Ultimate Moisture products restore and maintain vital moisturization, leaving hair touchably soft with a vibrant healthy look. Nexxus Humectress Conditioner: Prices shown in the e-flyers reflect regional pricing. Shop by departments, or search for specific item(s). The Nexxus Therappe Shampoo and Humectress Conditioner Set is normally priced at $29.99. This ingredient helps nourish your hair. Price. This category only includes cookies that ensures basic functionalities and security features of the website. I love shopping at Costco but end up buying alot of products I don’t need. Costco Price Panel. Price Price. Salon proven. Out of these cookies, the cookies that are categorized as necessary are stored on your browser as they are essential for the working of basic functionalities of the website. This helps to add extra moisture to my tresses to help detangling go more smoothly. 4.2 out of 5 stars 292 ratings. And this duo (Nexxus Therappe Shampoo and Nexxus Humectress Conditioner) is currently in stores as a bundle pack. //