If you want to save money, you have likely tried a variety of DIY projects. There are a plethora of videos and how-to guides online, from home renovations and beauty hacks to teeth whitening techniques. While some do-it-yourself projects can be effective, when it comes to your teeth and gums, it’s best to leave it to the professionals. Despite trending home remedies for DIY teeth whitening, your dentist advises against them. Here are 4 home whitening methods that claim to be safe but have hidden dangers for your smile.