Bring Out Your Bright White Smile When You Use Colgate Plax Charcoal White Mouthwash. This Alcohol-Free Teeth Whitening Mouthwash Has Been Developed With Whiteprotect'S Proprietary System And Charcoal To Prevent Advanced Stains That Keep Your Teeth White For Longer. Charcoal Mouthwash Contains Unique Freshfx Technology To Deliver A Cool, Fresh Sensation That Lasts 10 Times Longer Than Just Brushing. To Fully Protect Your Dazzling Smile, This Whitening Charcoal Mouthwash Has Been Clinically Tested And Contains Fluoride For Cavity Protection, 24/7 Plaque Protection And Effectively Fights Bacteria.