The 7 Best Teeth Whitening Kits for a Brighter, Whiter Smile

Best Teeth Whitening Kit Overall

Crest Leave-on Teeth Whitening Kit with LED Light

$49 at Amazon $53 at Walmart $50 at Target

Treatments per Kit: 14 | Suggested Duration: 33 minutes

The Crest Whitening Emulsions With LED Light is super easy and comfortable to use, and results in quick and impressive whitening. In our tests, we appreciated that the instructions are very easy to follow, and we didn't feel any immediate discomfort when applying the whitening solution.We especially loved how lightweight the product felt on our teeth. Unlike teeth whitening strips, these didn't shift around on our teeth or create a foamlike mess that starts bubbling up. Instead, this teeth whitening kit boasts a "barely there" feel and not one bit of goopiness. 

Most Effective Teeth Whitening Kit

Linhart The Whitening Collection

$95 at Amazon View on Linhart.nyc

Treatments per Kit: 3 to 4 | Suggested Duration: 16 to 64 minutes

The Linhart Whitening Kit is easy to use, and we achieved a color 16 shades whiter relatively quickly. This kit includes the LED teeth-whitening tray (which is rechargeable), a whitening gel (that you can use with your whitening toothpaste), and four syringes that each contains the whitening gel that you apply to the tray. The whitening solution didn't irritate our gums or lead to any sensitivity, but it did cause a little drooling, so you might not want to necessarily take a meeting with it on. Overall, we found it to be a very good value considering the results. 

Most Comfortable Teeth Whitening Kit

Colgate ComfortFit LED Teeth Whitening Kit

$40 at Amazon $50 at Walmart $53 at Target

Treatments per Kit: One | Suggested Duration: 10 minutes

If you've used whitening strips before and hate how messy they are (and how much gel you end up swallowing throughout the whole process), you'll appreciate this teeth whitening kit. In our tests, we loved that the kit was completely hassle-free, and we could hardly feel we had gel on our teeth. The LED device fits very comfortably thanks to the flexible tray that molds to your mouth. Unlike other trays that are bulky and can even cut your lips, this product didn't make us feel like our lips are being stretched to hold the device in place. We achieved a color two shades lighter. 

Best Teeth Whitening Kit Under 20 Minutes

Byte BrightByte Pro

View on Byte.com

Treatments per Kit: One | Suggested Duration: 16 minutes for at least 3 days

Byte BrightByte Pro's on-the-go kit lets you whiten your teeth in the car, on a plane, or on a train in just 16 minutes. The process is quick and simple as you'll just apply the gel and the LED device while it's connected to your phone to power it up — so no need to ever charge the device — and then let it work its magic. Plus, this kit comes with a handy travel bag that makes this easy to take with you anywhere. 

Best Teeth Whitening Kit with Whitening Strips

Crest 3DWhitestrips 1 Hour Express + LED Light

$58 at Amazon $60 at Walmart

Treatments per Kit: One | Suggested Duration: 65 minutes for 19 days

These tried-and-true Crest 3DWhitestrips get a whitening boost thanks to the LED light that fast-tracks you to Pearly White Town. In our tests, we noticed that these strips are easy to use and the LED device fit perfectly in our mouths for a fully comfortable experience. We loved that the strips stick well without sliding around or off and they're pretty comfortable to wear. The brand recommends using the entire kit, so you'll apply it every day for 19 consecutive days (and you can use up to two kits per year). We get that this is a bit of a time commitment, but we saw noticeably impressive results after about a week, and we achieved a whopping seven shades lighter after the full treatment course. 

Best Teeth Whitening Kit with Whitening Pens

Periosciences LED² Teeth Whitening Kit

$110 at Amazon View on Periosciences.com

Treatments per Kit: 12 to 15 | Suggested Duration: 15 minutes for 10-15 days

If you want a gentle, seriously effective system that doesn't feel overwhelming to use, get your hands on the Periosciences LED Whitening Kit. This kit's instructions were extremely simple and streamlined, and we were very impressed by achieving about 16 shades lighter (coming from a frequent coffee drinker). In fact, we found not a single thing about this process complex or annoying. The tray fit snugly against the gums thanks to the silicone inner ring, and our only complaint is that it holds a lot of saliva, so pulling it out can get a little gross. While we didn't feel any initial discomfort, tingling, or burning, after using it for a few days, we noticed some very minor increased sensitivity, so we slowed down to using it three to five times per week and that did the trick. The sensitivity faded with continued use, and the LED light didn't seem to exacerbate it. 

Best Budget Teeth Whitening Kit

Cali White White Teeth Whitening Kit

$11 at Amazon $17 at Walmart

Treatments per Kit: One | Suggested Duration: 10 days

This budget-friendly teeth whitening kit brightens your teeth with 35% carbamide peroxide gel, the same active ingredient concentration as some other, more expensive options on our list, such as the Linhart kit. This Cali White kit comes with a medical-grade silicone mouth tray that you'll use in conjunction with a minty-fresh whitening gel that actually tastes pretty good. We found the whole whitening process to be quick and simple — just add the gel to the tray, put the tray in your mouth, turn on the light and the light will turn off automatically in 10 mins. The automatic timer made the whole process even more seamless, and the product didn't irritate our gums. All we felt was a slight warmth from the LED light, yet zero pain or discomfort.