The 9 Best LED Teeth Whitening Kits of 2024, Tested & Reviewed

Best Overall

Crest Leave-on Teeth Whitening Kit with LED Light

$50 at Target $77 at Walmart View on Instacart.com

Format: Serum | Recommended Use: 14 treatments, apply 2-4 times per day for 30 minutes | Active Ingredients: Hydrogen peroxide

Most teeth whitening kits aren’t the most comfortable to use. This one, however, was so easy and comfortable that our tester thought she was using it incorrectly at first. All you have to do is dry your teeth, apply the whitening serum using the included applicator, let it sit for 30 minutes while you go about your day, and then press the LED light against your teeth for three minutes until it shuts off. We love that the accelerator light comes with batteries, so you won’t have to worry about charging it. The treatment is discreet, doesn’t make you talk funny, and does not cause tooth sensitivity—even when used up to four times per day which the brand recommends doing for an accelerated treatment. After the recommended 14 treatments, it made the teeth a full two shades lighter. 

While using this treatment two to four times daily is a bit time-consuming, because it doesn’t prevent you from going about your everyday activities (except eating while you’re using it), it’s not a dealbreaker for us. It’s effective, easy to use, non-sensitizing on the teeth or gums, and relatively affordable. If you’re looking for a mess-free teeth whitening option that you can use at home and see fast results, this is the one we recommend most. 

Best Budget

Cali White White Teeth Whitening Kit

$9 at Amazon $23 at Walmart

Format: Gel with trays | Recommended Use: 10-30 minutes daily for 7-10 days  | Active Ingredients: Carbamide peroxide

This option costs less than $30 and while we saw more dramatic results with other kits on this list, we were impressed that this one lightened teeth one to two shades. After applying the whitening gel into the trays, popping them into the mouth, turning on the LED light, and letting it sit for 10 minutes daily for about 10 days, it did create subtle but noticeable results. The brand also states that the system can be used up to three times daily, which could potentially yield more extreme whitening. 

The system is super intuitive, the trays come with a sanitary case, and the light is wireless while in use, but we did find that the tray was a bit big for the mouth, leading to some discomfort. But considering that the whitening formula didn’t cause irritation or sensitivity, it was quick to use, and it did lighten teeth (all at an affordable price), we still absolutely give this product the Byrdie stamp of approval. 

Most Dramatic Results

Linhart The Whitening Collection

$95 at Amazon View on Linhart.nyc

Format: Gel trays | Recommended Use: 16 minutes 2-4 times daily until desired results are achieved | Active Ingredients: Carbamide peroxide gel

A lot of at-home whitening kits come with trays that you apply gel to, bite down, and keep in your mouth to allow the active ingredients to work. This system works just like that, except the trays are attached to an LED light to help speed up the process. You apply about one-sixth of a syringe full of gel into the trays, bite down, press the button to turn on the light, and wait 16 minutes until the light automatically shuts off. The brand recommends doing this two to four times per whitening session for the best results.

While biting down and keeping the trays in your mouth for this period isn’t the most comfortable, the system is intuitive to use and produces impressive results. We saw a serious improvement in teeth whiteness in just one week of consistent use—we’re talking three to four shades lighter. We also appreciate that the LED light charger has a magnetic USB cord and that the kit comes with a whitening toothpaste to use with the whitening system. 

Most Convenient

Colgate ComfortFit LED Teeth Whitening Kit

$39 at Amazon $53 at Target $45 at Walmart

Format: Brush | Recommended Use: 10 minutes daily for 10 days | Active Ingredients: Hydrogen peroxide

Some teeth whitening kits are messy and time-consuming, but this one is neither. It features a compact whitening pen that you click a few times to fill the brush tip with serum, apply to clean and dry teeth, and then insert the LED light into your mouth for 10 minutes. The pen is effortless to use, and the LED light is small and comfortable in the mouth. It’s also attached to a cord that you conveniently plug into your phone to activate and charge.

Unlike some whitening trays or other LED devices that feel like they’re stretching your lips or are causing discomfort in your mouth, this one is so well-designed that our tester almost forgot she had it in. The light beeps at the halfway mark, then it beeps once more at the 10-minute mark to let you know your treatment is done. We love that the entire process takes just 10 minutes a day, and you can move around and get things done while using the device. We would have loved to see even brighter results, but it did help to lighten the teeth a full shade. 

Best With Whitening Strips

Crest 3DWhitestrips 1 Hour Express + LED Light

$60 at Walmart View on Crest.com View on Oralb.com

Format: Strips | Recommended Use: 1 hour daily for 19 days | Active Ingredients: Hydrogen peroxide

If you don’t mind having whitening strips on your teeth for an hour at a time (maybe you’re looking for an excuse to have an hour of quiet time), this whitening system is a great option. Though it is time-consuming—the entire process takes an hour and five minutes per day for 19 days—it’s simple and easy to use and we were very impressed with the results. 

After drying your teeth, you apply the strips to your top and bottom teeth, let them sit for one hour, and then hold the LED light against your teeth for five minutes before removing them and completing the treatment. In just one week, we saw a noticeable improvement in the whiteness of our teeth. After 19 days, we were pleased that the system lightened the teeth almost five full shades. We also appreciate that the treatment was fairly mess-free and didn’t cause sensitivity. 

Best Multipurpose

Periosciences LED² Teeth Whitening Kit

$110 at Amazon View on Periosciences.com

Format: Pens | Recommended Use: 15 minutes daily for 10-15 days | Active Ingredients: Carbamide peroxide

We love this kit for folks looking to whiten their teeth while improving their oral health. The kit features whitening pens that deposit the carbamide peroxide solution onto your teeth and trays with an attached LED light. What’s special about this one is that it has a blue light, a red light, or a combination of both. According to the brand and Dr. Veytsman, red light technology can help support soft tissue and gum health. Dr. Veytsman adds that red light technology has also been shown to help with tooth sensitivity. “This is because the light prompts a chemical reaction that improves blood circulation in the area,” she explains. “With better blood circulation, inflammation levels within the mouth are reduced overall. Simultaneously, the light decreases the amount of bacteria in your mouth keeping your soft tissue and gums healthy.” 

In addition to the multitude of benefits that this kit provides, we love that it’s simple and easy to use, and it doesn’t take much time. We found that it helped visibly lighten teeth nearly five full shades after using it 15 minutes a day for 15 days. We absolutely recommend this one for anyone wanting to kill two birds with one stone—brighten your smile and help improve your gum health. 

Most User-Friendly Kit

Snow Teeth Whitening Kit With LED Light

$79 at Amazon $70 at Target $69 at Macy's

Format: Gel with trays | Recommended Use: 9-30 minutes a day until desired whiteness is reached | Active Ingredients: Hydrogen peroxide

We love a good, well-rounded kit with accessories, and this one from Snow delivers. Our tester had never used a whitening kit at home before and found this one surprisingly easy to implement into her oral care routine. After brushing her teeth, she'd just fill the provided tray with gel (there's enough for 75 treatments), plug the LED mouthpiece into her phone or computer (there are four adapter plugs included), and let the kit work its magic for nine minutes. While she did experience tooth sensitivity from the extra strength gel the regular strength didn't bother her at all.

After just one use, she noticed her teeth were a shade whiter. Since the kit is so user-friendly, she could absolutely see using it periodically to brighten her smile.

Best for Travel

Whitebite Pro Teeth Whitening Kit

$30 at Amazon

Format: Gel with trays | Recommended Use: 16 minutes a day until desired whiteness is reached  | Active Ingredients: Carbamide peroxide

When you have to travel for a work event on short notice but want a quick teeth whitening before you present to colleagues, we recommend this kit from WhiteBrite. It's small enough to fit in your carry-on and powerful enough to make a noticeable after just one use. Each session lasts 16 minutes, and the LED light automatically shuts off after that. We love that the mouthpiece is equipped with blue and red light technology (the blue light whitens while the red light sanitizes). It was surprisingly comfortable to wear during treatment sessions, too.

While our tester did experience some tooth sensitivity from the gel, it was a small price to pay for the incredible whitening power the kit provided: his teeth were one shade lighter after one use, and two shades lighter after four. Considering these results, we honestly can't believe it's under $30.

Best for Fast Results

HeySmile Teeth Whitening Kit

View on Heysmileteeth.com

Format: Gel with trays | Recommended Use: 10 minutes a day until desired whiteness is reached  | Active Ingredients: Phthalimidoperoxycaproic Acid (PAP)

Since at-home teeth whitening products are typically not as powerful as in-office treatments, it's not easy to find one that will whiten efficiently and quickly, but this one absolutely does. Our tester had tried strips in the past, but found them annoying to use—this LED kit was surprisingly easy by comparison. It took about two minutes to get it ready to go, and once she'd painted her teeth with the prefilled pens and inserted the mouthpiece, she could do chores around the house with ease while the gel processed for 10 minutes.

The LED component took some getting used to, and the mouthpiece was slightly uncomfortable at first (sizing can be off with these one-size-fits-all at-home devices), but she had no teeth or gum discomfort from the gel. After just one treatment, her teeth were noticeably whiter, and a shade or two whiter by the end of the testing period.