Do not REPEAT do not order any of these teeth whitener products. Not only will you get a WORTHLESS product but you will automatically get signed up to a subscription service for WelnnessWatchers MD. Both are scams and you do not know that until you start seeing monthly charges appear on your credit card. I disputed my charges and the credit card company was even taken too. They believed the information that the compoany sent re: my disputed charge until I sent them the websites that revelaed these people were nothing but scam artists.