Opalescence 35% Teeth Whitening Gel Refill Syringes (12ct) -5197-6

Recently I decided to take care of my oral and dental hygiene. After visiting the dentist and having some fillings carried out I asked him whether my teeth could be whitened and how much the cost was. He replied yes and the bill was around £300! Not exactly small potatoes. Whilst I had no inclination whether the price was reasonable at the time I decided to do some research and try out certain products. I have tried the Crest strips a year or so ago and unfortunately they did very little after buying 2 weeks worth supplies and whitening every day. Upon further research it was mentioned that the active agent would be neutralized with saliva so the whitening effect wouldn't be as effective as a professional job. All it would do is froth up in your mouth and not produce noticeable results. This led me to having custom dental trays made from Ebay where they send you some putty for you to make a mould of your teeth and you send it back for them to make custom dental trays. I then ordered some Opalescence 35% from Amazon USA. EU laws unfortunately require anything over 0.1% Hydrogen Peroxide can only be carried out by dentists so I was forced to take that route. Not knowing how much I would need I just bought a 3 pack. Each pack contains 4 syringes. Also since I was going to get stung by customs which I paid for in advance during checkout I took the gamble and bought extra just in case they gave good results. In order to quantify any difference I bought a basic tooth shade guide of Ebay. I started of at a shade 9-10 (My teeth still had intrinsic tar stains from my smoking days and heavy tea stains. We Brits love tea) I finished at a shade of 2 (I only used 5 syringes to get this result. Amazing! Dazzling! Very Joey Essex lol). I decided that this was bright/white enough. Anymore then I would look like Ross from Friends. Please bear in mind monitors and taking camera pictures may distort the colours. I did not add any extra artificial effects, ISO were the same, no exposure was added but due to the difference in lighting the F stops may have been different. Pictures were taken 5 days after whitening treatment so there is no dehydration on the teeth which produce fake whiter results. I was able to use one syringe to do two treatments which I did every second day if my gums needed time to heal or my teeth were too sensitive. Prior to receiving the Opalescence I rubbed vitamin E oil onto my gums, twice a day. As long as you don't overfill the dental trays there should be minimal "spillage" onto the gums that cause chemical burn. I did find that my gums went white when spillage happened and it did cause chemical burn but it healed after a day. My pain threshold is quite high so I was able to bear it but I did give time to heal until I started treatment again. The whitening agent I could hear gently fizzing away slightly during treatment so I knew that it was doing it's magic. Common sense is just involved, if gums hurt then give it time to heal and using vitamin E which is an anti inflammatory does wonders. My whitening treatment contained 35% carbamide peroxide which is around 14% hydrogen peroxide so if it causes excessive pain then reduce the treatment time. I could only bear 30 mins at the beginning but after the second syringe I was able to withstand an hour session. The longer the whitening agent stays on your teeth the more it will be able to break down the bonds of molecules that cause stain. To combat the inevitable tooth sensitivity I used GC tooth moose which also remineralizes teeth and brushed my teeth with Biorepair plus toothpaste. Sensodyne Pronamel works equally well in repairing enamel. Things like Blue plasma lights are a placebo. They do nothing and research has proved it. You can buy a cheap one from Ebay for £3 for psychological assurance but trust me not worth wasting money on (I bought one and it did nothing). I have 6 syringes left and plenty to retouch my teeth over the year or longer to maintain brightness/whiteness. Overall I am very pleased with the outcome but would advise that anyone who wants to go down the DIY route sees a Dental professional first during their checkup and ask whether their teeth is in good condition for whitening treatment. Edit on Novermber 12th 2016. This product has a shelf life of 2 years if refrigerated. I came back to re-do my whitening after 11 months and the potency of the product has reduced greatly from when I first bought it. They were kept refrigerated as specified but don't seem to work as well as when I first received them. So buyer beware if you intend to buy in bulk and store them.

This product truly does work and whitens your teeth very quickly! People are CONSTANTLY complimenting my smile and asking me how I keep my teeth so white. Mind you, I am a smoker and I drink coffee and tea all day long. I initially paid $400 at my dentist to get the professional trays that are a mold of my teeth and 8 syringes of this stuff. When used properly, it should last you a *minimum* of 2 months after DAILY use. It goes a long way, but I didn't realize how badly I was being ripped off! After finding it here on Amazon for this price, I was ecstatic! I immediately ordered it and have been using it since. There's absolutely no difference between this one and the one my dentist gave me, so I know it's the real deal. The only downside of this is that just like with most whitening solutions, your teeth do feel sensitive for a day or so after using. There were a couple of times I fell asleep with the mouth trays still on, and woke up in the morning to SEVERE sensitivity- but that was my fault since you're only supposed to leave it on for one hour. However, the super bad sensitivity only lasted one day. Also, don't use too much to where it's oozing out onto your gums because it burns like hell when it sits on your gums for a while! (Use only a tiny drop per tooth.) I got a remineralization gel here on Amazon, which is supposed to help with the sensitivity post-bleaching and it's made a world of a difference! As for the opalescence, I apply a small dot of the bleach closer to the bottom of each tooth on the tray that touches the front side of my teeth (so that it doesn't touch my gums when it spreads), and leave it on for about 1 hour before bedtime. I do it every night until I get the results I want, and then just maintain by using it for a 3-4 days in a row each month. (That's just my personal preference though, since like I mentioned, I smoke and drink tea and coffee every day so my teeth get stained rather quickly). Anyway, I can absolutely say that I truly do recommend opalescence to anyone who needs their teeth whitened. It WILL work, just remember that a little goes a long way!

I first got custom whitening trays about fourteen years ago - right after I had my braces removed. I have used just about every gel from several dentists. All of the gels have been far less than 35% and of course took a lot longer per treatment (usually overnight) and many more treatments than this product at 35%. And the gels cost SEVERAL times more from a dentist. One can achieve the same results as this 35% product, but it will take much longer, and will cost much more. There is a balance between the percentage of carbamide peroxide and gum irritation, however - and it varies from person to person (the irritation, that is). But here is what I have found. If I floss my teeth once a day and brush them two to three times a day and use a fluoride rinse "Act" at night, I can use the Opalescence 35% for one hour per treatment in custom trays. Even after one hour, I can see clear results. If my teeth are still too "dim" I can use it every day until I get the results I want. I know (sort of) if I have over done it because my dentist will tell me my teeth are "too" white and off his colour chart. I never tell him this, but I think his teeth are dim and stained. (Sorry if that is mean.) My tips: Brush your teeth at least twice a day with a fluoride toothpaste. Floss once a day and use Act fluoride rinse at night and use THIS gel. This gel is the best I have tried. It works quickly. Short treatment, few treatments. If you cannot tolerate an hour; use the recommended half hour. I don't have sensitivity, but if you do, switch to "Sensodine" sensitive teeth toothpaste and use the Opalescence less frequently, for a shorter time or both. Also, stop doing those shots of straight Bourbon, because that compounds the irritation to your gums. I vacillate about how often to touch up my teeth - so I asked another Amazon reviewer. Anyway, that is what works for me and I hope this helps you. A bright smile makes an awesome first impression. And second, third... Cheers, Dan

Great product and price. would buy again

These are definitely 35% and they are definitely STRONG. I cannot reiterate that enough. I used to use NiteWhite, but I switched to Opalescence after my dentist gave me a couple with my new whitening trays (my teeth have moved from my TMJ). He actually gave me 20%. I didn't like them at first because they are like a sticky gel, whereas the NiteWhite, which I was used to, was more like a toothpaste consistency. I ended up really liking the fact that the opalescence is a sticky gel, because it doesn't move around in the tray and sticks my trays to my teeth. Because of this, I also don't have to spit out the extra whitening stuff that seeps out from the trays like my last brand. Anyway, I go all out when I do things, so I decided on the 35% like I used to have in the NiteWhite, but these are SO much stronger. You should only leave them in 20 minutes to 35 minutes MAX! Otherwise you will have some serious sensitivity pain. I left them in for an hour once and I will never do that again. I also have to note that if you get this gel on your gums it will BURN really badly. To the point where you think it might actually burn a hole in your gums. Yikes. I've had to take them out and try again later because of this. That's why I'm giving it 4 stars. I feel like I can't get the gel as close to my gums as I would like to for fear of it burning the crap out of them. I'm going to give some of them to my siblings and I'll go for the 20% next time I order! Overall, this stuff is bomb. My teeth are noticeably whiter after even just one application. :)

UPDATE July 2015 I have now used this product for about 8 years exclusively. Throughout that time I never returned to the dramatically yellow teeth I had. Last year I replaced the top 2 front teeth that were veneers with new crowns that used new technology. I decided to get the crowns even whiter, down to a BL4. So that is whiter than natural teeth, but not by much. So the challenge was to bleach for about 3-4 weeks to get the teeth next to them down to a BL4 from about a B2. I still use the custom trays the dentist did 8 years ago, but at this point I NEVER burn my gums. After practice, you will never burn your gums either. The trick is good custom trays combined with experience. You still have to deal with a little sensitivity, but it is well worth it, and is temporary for me. I successfully whitened most of the teeth between a BL4 and a B1. With the new crowns in, the teeth look great for someone in their 50's. The teeth look totally natural, too. Last week I did 4 days of touch up and they look even whiter in a short period. Good luck! --- Original 2007 Review With products as this, it is best to precursor the review with some instruction and expectation setting: Instructions: --This product is meant to be used as a refill to custom trays fitted by your dentist. Otherwise, you will have issues with uneven application and gum burning. --Application must follow instructions that are provided. Do not over apply or the gel will burn your gums and turn them white for a little while. Expectations: --At the end of the day, research suggests that the 35% whitens as much as the 15%. The difference is twofold: The 35% needs to onlt stay on for 30 minutes, but the 15% needs to stay on an hour. Second, the 35% will get your teeth whiter faster. E.g., if it takes 12 weeks for the 15% to get to the desired whitening, it may take 8 weeks for the 35%. --The 35% will make your teeth more sensitive than 15%. For me, it was worth the extra sensitivity to get faster results. --It takes time! Results do not occur overnight for most people. Expect 12-16 weeks, applying once a day at night for 30 minutes. If it occurs faster, use the remaining gel to periodically keep them white. --The gum line part of the tooth may still be yellowish. My guess is it is hard to get right to the gum line without burning. So the application will still be a little uneven. My review: I had noticeable results after 4 weeks, from 2-4 shades. One tooth was 4 shades, most were 3, and the rest were 1 to 2. I am under Dentist care for the entire process. For the 4 week period, the Dentist was highly pleased with the progress. I was pleased as well. After 6 weeks, though, the progress seemed slower, and the lower teeth are still too yellow. As well, one issue remains: one upper front tooth would not whiten well. It had undergone trauma when I was young. So, the 2 upper front teeth will need veneers. Right now it is a race to whiten as much as possible to get the whitest shade of veneers possible. My method: -- I used 12) 15% gel for 6 weeks that the dentist provided -- I used (8)35% gel for 4 weeks that I bought from Amazon -- I applied twice a day for at least half the time -- I used between 1/3 to 1/2 of the syringe per application In all, you have to be patient and not expect quick results. Some teeth will whiten faster and others may not whiten much at all. From what I researched and the Dentist's input, results widely vary. However, you should certainly see viable results and the effort is not hard. 30 minutes after bushing and flossing is pretty easy. I disagree with the low ratings for this product. Just because someone does not use the product properly, does not reflect on the product quality. Results based on non-custom trays are invalid in my opinion and should not reflect on the rating.

Wow, so I've been dabbling with 12% carbamide peroxide gel (aka hydrogen peroxide urea or CH6N2O3) for quite some time, purchased from a different company called SmileSciences. Their product worked ... albeit slowly, giving moderate results that were noticed over 2 to 3 weeks. Additionally the SmileSciences gel was used during the night (so, 6 - 7 hours) over that 2 to 3 week span. The Opalescence PF 35% Teeth Whitening carbamide peroxide solution, however, had noticeable effect on my teeth after a _single_ 30 minute treatment (using an AuraGlow 5x Blue LED Light Teeth Whitening Accelerator Light ). Everyone's biology is different, but the treatment left me with no teeth sensitivity aside from mild chemical burns on some of the gums that descend interdentally between my canine and pre-molars. The first time I used the solution, I was certainly liberal with the amount of gel applied within the retainers. The second time however, I used as little as possible to limit gel from escaping over the edges of the retainers, helping to prevent chemical burning of my gums. Another pro-tip is to not brush your gums as abrasively before applying the gel. I find that waiting 30 mins. to 1 hour after brushing helps limit chemical burns of the gums. HOW I TREATED THE TEETH: I use the Invisalign clear aligner system, and my dentist / orthodontist said the modern variants of the 3D-printed trays can double as whitening trays. That's what I use. From personal experience, using the store-bought, silicone ones that you bite into after submerging into boiling hot water, honestly, do not perform well at all. If you're seriously considering teeth whitening, you might want to consult your insurance for their orthodontia coverage and get a moulded tray. WARNING: DO NOT put too much Opalescence 35% gel in the aligners, because this particular gel with its high concentration of CH6N2O3 WILL almost certainly burn your gums. Vitamin E gel will almost immediately soothe the pain and also immediately promote healing. Get it at Trader Joe's or online: you'll thank me.

Works so good however major tingling while using it

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My teeth got sensitive immediately and turned to yellow couple of days later!!

Great product! Great shipping, arrived promptly and the expiration date is far in advance, giving me enough time to use the product. Highly Recommended!

The product works as advertised. I was recommended this product by my dentist and discovered that it was much cheaper on Amazon than other platforms. It was also more than 4 times cheaper than from my dental clinic.