There are countless at-home teeth-whitening kits out there, from the basic bleach trays and LED lights that you might remember from your childhood to more elaborate whitening pens and strips that you see all over Instagram. Some of them work, and some don’t, so it can be difficult to know what to buy — especially if you have sensitive teeth or gums. To help, we spoke to dentists and experts to find out which ones are worth it. Keep scrolling for 15 of the best teeth whitening kit options, from innovative LED trays to cult-favorite strips that work.

GE’s Teeth Whitening Kit

The best whitening kits contain a mixture of chemical products that work to remove stains, including whitening gel or bleach. The bleach in most over-the-counter whitening products is either hydrogen peroxide or a milder version called carbamide peroxide, which works just as well but is less likely to cause sensitivity. The peroxide causes the bubbling that you’re used to seeing in whitening toothpastes and trays.

This GE teeth-whitening kit includes custom-fitted trays (top and bottom) made by a dental lab, as well as syringes of the brand’s professional-strength whitening gel with 35% carbamide peroxide. You can choose between packages that include 9 or 27 whitening applications, and a desensitizing gel is available with the “sensitive” versions of this kit.

SmileDirectClub

The company that fixes smiles is a GH Beauty Lab favorite with this kit, which contains four pens of its enamel-safe whitening gel and an LED accelerator light to boost the results. In a recent GH Beauty Lab test, this kit received rave reviews from testers for not irritating their teeth or gums and brightening by at least one shade after a week of nine-minute sessions each day.