Best Teeth Whitening Kits in the US (2026)

Comparison at a glance

Details from each brand's own website, checked 1 October 2026.

Why SmilePro is our top pick

Product offering (9.0). Thirty treatments for $77 works out at $2.57 each, with a 30-day money-back guarantee.

Features and formula (8.5). A wireless, rechargeable tray with a built-in 10-minute timer, and 6% hydrogen peroxide gel in pens. SmilePro says its blue light helps break down stains and its red light makes treatment more comfortable.

Customer experience and brand rating (9.0). Rated 4.7/5 from 3,651 reviews on SmilePro's own store, with one 10-minute session a day.

Standards and recognition (9.0). Ingredients and strength are listed on the product page, and four publishers have recognised it (below).

How it scored

Recognition from other publishers

• The Independent (UK): "Best teeth whitening kit overall", April 2026.
• Good Housekeeping UK: "Best whitening kit for sensitive teeth", guide updated July 2026.
• Men's Health UK Healthy Grooming Awards: "Best Whitening", October 2025.
• Forbes Vetted (US): "Best for beginners", March 2026.

Best for: most people who want a short daily LED routine with a money-back guarantee. Skip it if: you have crowns or veneers on your front teeth, or already have sensitive teeth and have not checked with a dentist.

The alternatives

GLO So Brilliant Teeth Whitening Kit 7.6/10

Best premium kit

GLO's current kit, which replaced the GLO Brilliant device. It uses 6% hydrogen peroxide gel pods with a mouthpiece that adds light and heat, in three 8-minute sessions a day for 5 days.

Strengths

• 6% hydrogen peroxide with light and heat
• A short 5-day course
• 30-day money-back guarantee, with return shipping covered in the continental US

Limitations

• The most expensive kit we compared
• Three sessions a day
• Refill gel pods are sold separately

Best for: people who want a short course and do not mind paying more. Skip it if: price per treatment matters to you. Visit GLO Science's site

Crest 3D Whitestrips Professional White + Whitening Light 7.5/10

Best-known brand with a light

Crest's strip kit with a small wireless light. You wear the strips for an hour, then use the light, once a day for 19 days. Crest sells through stores rather than directly.

Strengths

• Widely available in US stores
• 60-day satisfaction guarantee
• No gel to apply

Limitations

• Strips stay on for 60 minutes
• Peroxide strength not stated
• The light runs on batteries

Best for: people who prefer a familiar brand from a local store. Skip it if: you want short sessions. Visit Crest's site

How we rated these kits

We compared each kit on four criteria: what it offers for the price, its features and formula, what customers say, and the standards it is sold under. Each gets a score out of 10, and the OHA score is their average. Our ratings are based on research using each brand's published information and customer feedback, not on hands-on testing. See our methodology disclaimer.

Buying guide

Strength and safety. We found no national limit on whitening strength in the US sources we checked. The American Dental Association recommends talking to a dentist about whether whitening suits you. Home kits commonly use hydrogen peroxide or carbamide peroxide; stronger gels whiten faster but are more likely to cause sensitivity. See is whitening safe?.

LED kits, strips or trays. LED kits use a gel with a mouth tray and light. Strips need no device (see best whitening strips). Custom trays from a dentist cost more and include an examination.

What to expect. Whitening lightens natural enamel only, not crowns, veneers or fillings. Sensitivity is common and usually temporary.

Frequently asked questions

Does the LED light make a difference?

The evidence is mixed. Consumer group CHOICE quotes a dental professor who says small blue LED lights in home kits generally add little, and that teeth can look whiter at first partly because they dry out, with some of that fading as they rehydrate. The whitening gel does most of the work. A light that switches itself off can still make sessions easier to time.

Will whitening make my teeth sensitive?

It can. The NHS lists sensitivity and sore gums as common side effects, and a 2018 Cochrane review found them usually mild and temporary. healthdirect advises seeing a dental professional if it lasts more than 1 or 2 days. See whitening with sensitive teeth.

Will whitening work on crowns, veneers or fillings?

No. The NHS and healthdirect say whitening does not change the colour of crowns, veneers, dentures, implants or fillings, so they can end up a different shade from your natural teeth. See stained teeth.