** I have both shampoo and conditioner in gallons- we can make them a duo if you’d like :) 100% authentic/ not used or opened- from my personal back bar collection (licensed professional). Biolage Color Last Conditioner helps maintain the color depth, tone and shine for vivid color-treated hair. Hair is left soft and detangled with extra shine. Benefits Low pH conditioner moisturizes hair Extending the life of your color Hair is left soft and detangled Get shine and depth of color Paraben-free Suitable for color-treated hair and non color-treated Research Results Helps preserve salon-vibrant color for up to 9 weeks* *When using the professional products system of ColorLast shampoo and conditioner vs. a non-conditioning shampoo