They seem to last me about two months. My third this year. First, the charging part overheats. It has been deformed, discolored and probably unsafe. See photo. On the second, the red LEDs went out. My third is on the way. Why, you ask, do I keep ordering them if they don't last long? Because they work. My dental hygienist has been giving me rave reviews since I started using this thing. Keeping my gums healthy costs me twenty dollars a month. Your mileage may vary. I have used a similar product from another company which is also very effective and also very poor quality and delicately made. The price of this one is a bit higher than this one but it will last longer so if the next Starlite Smile fails too I might decide it's more cost effective to go back. These LEDs are efficient and easy to use. maintenance of oral health. It is a pity that no one has yet figured out how to make a reliable device with their help.
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