Crest/Oral-B Antibacterial Mouthwash, Alcohol-Free, Portable Pack, 3 Bottles*1L! [] Highly recommend this Crest mouthwash! 12 hours against gum problems! It can effectively reduce gingival bleeding, keep the oral cavity clean, reduce dental plaque and bacteria, and can also relieve gingival bleeding, redness and swelling!! No alcohol irritation, pregnant women can also use it! Take about 20ml after brushing teeth or eating each day, and spit it out after holding it for 30 seconds!