Tips: ·If you are using it for the first time or after multiple uses,it is remended that you wash it first with hot water or lemonade. ·It is remended to use it twice or three times a week. ·During the first few days of using the tongue scraper may in some cases provoke a feeling of nausea. This feeling will disappear with time,please don't worry. ·Do not use the tongue scraper too deep into the root of the tongue,to avoid the sensat of vomiting cause by simulat. ·Kids should use it under parental supervis. Paa list: 4* Tongue Scraping Cleaners (Green & Blue & Oran & Bla) 4* Portable Traveling Carry Cases" What You Will Receive: Four surgical level stainl steel tongue scraper,four-color handles allow you to make a better distinct with your fily,we will also send you four carrying cases to carry better in your travels. Say Goodbye to Bad Breath: Our surgical-grade stainl steel tongue scrapers are the solut you've been looking for to t rid of bad breath. No more ineffective brushing and flossing - our scrapers t rid of all the grossn on your tongue and make your taste buds more sensitive. Wake up without horrid morning breath and enjoy every meal! Double-Sided Design for Maximum Effectiven: Our odorl stainl steel scrapers have a double-sided design that s maximum effectiven without any metallic taste. Use the A-side to scrape 3-5 times (refer to picture 6),and then chan to the B-side for a thorough clean. Size for Everyone: Our 5.5" * 1.18" oral cleaner is suitable for men,women,and children. It's been tested thonds of times to it's the size for everyone. For children,we remend using the A-side as their tongues are softer. Long-Lasting and Easy to Clean: Our tongue scrapers have a lonr life than plastic scrapers and are mirror-finished with a smooth surface that won't da your tongue coating. They're also easy to clean - simply rinse with water and put them in the brushing cup. For first-time use,clean them in boiling water or brine,and wash them at least once every three months. Plus,you'll receive two carrying cases to take them with you on the go!.