As a retired dentist, I know that carbamide peroxide has a limited shelf life. So...how fresh is the Opalescence that Amazon sells?
869947
There isn't an 'expiration' date on the containers that I have bought and I have bought 4 containers. I don't use them EVERY day, but so far, each and every syringe has flowed smoothly, and I can actually see the difference in my teeth. There are 4 syringes in each container, each syringe lasts for 2 -3 applications in my trays. So far, this product has really done a good job in my opinion.
869948
I really can't say as I threw away the box that it came in and just kept the container that actually holds the 4 units. I keep them refrigerated and they are still very effective. Sorry I can't help.
869949
Excellent question, because I thought the same thing. I could not find an expiration date anywhere on the box they came in, nor on the syringes. I have tooth sensitivity when I use them, (which is common with me), so they must still be active. I do keep them stored in the refrigerator.
869950
There is an explanation for expiration date on the Opalescense instructions. The expiration date is on the side of each syringe. It is stamped in clear plastic. There is a letter and then 3 digits. The first two digits indicate month. The last digit indicates year. For example: V115 indicates an expiration date of November 2015. I bought two packs in March of 2014 with an expiration date of November 2015. I'd say that's fresh enough for me.
1072476
There is no difference - it's the same. I have only used Opalescence and it works. It's the same as at the dentist office only cheaper.
1468494
This is not a "neon bright" tooth whitener this will remove natural man made stains I love this product to remove coffee and "aging" stains. I have never had an issue with this site. Best retailer online. I have ordered these whiteners numerous times with no problems not expired items. after using this product I get constant complements on my teeh you may also want to use NUPRO course tooth polish, I use between whitening. You can order this from dental web sites or I ask my dentist for extra samples.
332857
I bought it by the case. I really don't know exactly why there is a shelf life as it is completely dry and in a vacu-sealed package. I'll be honest, I've used it way past the shelf life and it was just fine.
377556
Not real sure about shelf life. Might want to check on-line for more information.
1165050
In general we have found Amazon's freshness dates to be quite satisfactory on the orgain products. Of the 20-30 cases of orgain products gotten from Amazon's Subscribe & Save Program none have been outdated. You might be able to have Amazon check the dates before ordering--worth asking their customer service. Hope this info is helpful.
599444
Good question... I just ordered this item and am really hoping I receive a nice fresh tube. This is a retinol cream, meaning the ingredients are easily expired. If this cream is a year old the ingredients have broken down and will no longer be as potent. Or worse... could be more potent to a harmful degree!
1347850
Hi, Allen. Well, as a first time buyer, mine was clear. I know that the uber-expensive Cellx C I bought, turned the color of rust very quickly. This means it's old. I have read that anything containing vitamin C should be refrigerated.
1496793
There are a lot better products available from my experience opalescence is a pretty good choice. I have tried quite a few and most don't work as reviewed
141887
I started out using Nupro when I first got my whitening molds from my dentist. They came with the molds. However, when it was time for me to get new gel I called my dentist to ask them where I could purchase the gel and they told me they no longer use Nupro and recommend their patients use Opalescence. I've been using Opalescence since then. I will say that I don't remember much of a difference in the gel other than the strength. I never asked why they switched.
2218884
It has a long shelf life if unopened. After opening it's recommended to refrigerate and use in three days. My experience when ordering from Amazon is expiration dates almost a year out.
429298
The best way to keep it fresh is to store in the refrigerator. Caveat: if you've done this before, you do know that this product contains, hydrogen peroxide. I found the 20% to be too strong; it left my teeth quite sensitive to heat and cold. I had never used this high a concentrate. If this doesn't bother you, fine. However, if you're a first-timer, I would select 10% or less. I've had to use a prescription fluoride toothpaste my dentist gave me which is helping. Ice cream? Out of the question. Using a lower strength may take a bit longer, but better to be safe than sorry. BTW, you must have trays that fit your teeth with the gel. Hope this helps. The best way to keep it fresh is to store in the refrigerator. Caveat: if you've done this before, you do know that this product contains, hydrogen peroxide. I found the 20% to be too strong; it left my teeth quite sensitive to heat and cold. I had never used this high a concentrate. If this doesn't bother you, fine. However, if you're a first-timer, I would select 10% or less. I've had to use a prescription fluoride toothpaste my dentist gave me which is helping. Ice cream? Out of the question. Using a lower strength may take a bit longer, but better to be safe than sorry. BTW, you must... » Read More The best way to keep it fresh is to store in the refrigerator. Caveat: if you've done this before, you do know that this product contains, hydrogen peroxide. I found the 20% to be too strong; it left my teeth quite sensitive to heat and cold. I had never used this high a concentrate. If this doesn't bother you, fine. However, if you're a first-timer, I would select 10% or less. I've had to use a prescription fluoride toothpaste my dentist gave me which is helping. Ice cream? Out of the question. Using a lower strength may take a bit longer, but better to be safe than sorry. BTW, you must have trays that fit your teeth with the gel. Hope this helps. « Show Less
2203648
no idea - i use it when i buy it. The product is very effective - the best I have found. Who cares about shelf life when you have the best product?
1634422
I've been using this product for about a year with amazing results. When I saw it on Amazon for close to $100 than my doctor's office, I took a chance knowing Amazon stands behinds everything they sell. I have found with the 4+ times I've ordered it from Amazon, it comes in the exact same packaging as my doctor's office with the same excellent results. I'm very pleased and will continue buying it from Amazon. Good luck!
2043151
Hi. There is a 1:3 ratio of hydrogen peroxide in carbinute. 10% peroxide. Hence your faster whitener is hydrogen peroxide. ZOOM works wonders, just be careful of your gums. I put the gel on my teeth half way up and let tray push whitener up. I cover my gums with blister. That is how strong it is...I hope that helps.
1524957
I just looked at my bleach syringe and it's 15% carbamide peroxide. This is "Professional" grade whitening gel. I originally got this product from my dentist, along with my bleaching trays. My dentist sells a 4-pack for $40, so this a great deal! I only purchase this gel from Amazon. A helpful hint: my dental office says to store the unused bleach in the frig, to preserve/prolong freshness. I hope this helps you.
2051342
I had my original whitening done with a product from a dentists office 20 years ago. This is pretty much the same thing you get from the dentists office now, except so much more cheaper. When I first did mine, it was for two hours every day. I think it's just a matter of how much time & how often you want to dedicate to it :-)