Yes. Teeth whitening pens produce instant results but continue whitening teeth for several minutes to hours after application. There are quite a few different whitening kits and whitening gel types and styles on the market. The gels include whitening pods, pens, syringes and strips with pre-applied gel. There is also a choice of ingredients, some with hydrogen peroxide and others without.

Trays — Trays contain a peroxide-based whitening gel you place on your teeth for a period of time. They’re one of the most effective at-home teeth whitening options Pens deposit much less product onto your teeth, so can be used more frequently, but you should still aim for one to two applications per day (and limit use to one or two weeks at a time or as needed). Trays are commonly recommended for up to 30 minutes, and light kits are usually left in place for shorter periods of time, often less than 10 minutes. The duration for both varies but is usually no more than two or three weeks in total.Generally, though, Dr. Izhaky says strips are safe to use twice a day for up to two weeks for a maximum of 30 minutes at a time. Depending on the ingredient percentage, she adds, gels can be used for one to two hours per day for two weeks as well. When compiling our list, we also consulted three dental professionals to learn exactly how teeth whiteners work and get their advice on how to use them. These experts included: We used the products for the first time in our Verywell Testing Laband continued to use them at home according to manufacturer instructions. In the Lab and at home, we took note of how easy it was to set up and apply the product or treatment, as well as how our teeth felt before and after the treatment (e.g., if there was any sensitivity or discomfort from the appliance or device itself).

Crest Whitening Emulsions Leave-on Teeth Whitening Gel Kit: This was easy to apply with a pleasant, mild taste, but in testing, we saw zero whitening effects—even with the maximum amount of allowed applications per day. Some whitening gels are peroxide-free: HiSmile and Smile Avenue both use Phthalimidoperoxycaproic acid (PAP) which is much safer for teeth. These products also utilise ingredients like Hydroxyapatite which can help to remineralise your teeth while you whiten them. Types of teeth whitening gelsThe best teeth whitening gel in the UK is undoubtedly one that your dentist can use in-office or supply you with for a mixture of in-office and at-home whitening treatments. You can of course buy refills from your dentist, but they might be a bit more expensive. If your burns seem severe, become inflamed, or cause you concern in any way, it’s a good idea to visit your dentist. By looking at the injury, your dental professional can tell you if home care will be enough to treat the injury or if there are other options needed to relieve your injured gums. 4 Tips for Soothing Irritated Gums Overall, the whitening results were significant enough to make us recommend this product as a good choice, especially since it didn’t cause any pain or discomfort and is priced within the average range for a whitening kit. Given how much we know professional whitening costs, and remembering the pain and sensitivity we've had with other whitening products in the past, we absolutely think this is worth the price and the inconvenience for a couple of weeks. Whitening strips can be a messy, awkward affair, but the Crest 3D Whitestrips for Sensitive Teeth could not have been easier for us to use. The strips went on and came off without any trouble and didn’t cause any pain, stinging, or sensitivity during or after use. And they worked, too—we were able to see a noticeable difference as soon as we took the first strip off our teeth and felt confident that the results would keep improving from there (with this particular kit, you’re directed to use the strips for 28 days).