How many days does one syringe last?
471787
If you were doing tops and bottoms front teeth mainly, probably 7 applications.
471788
Sparingly applied to a custom fitting, upper and lower, about two days. Non-custom fittings use up more gel, so I got the custom ones. Depending on gum sensitivity, user might be more comfortable with lower-strength gel, at least to start. Find product-specific YouTube clip and view making and use of trays. After watching YT clip, I carefully trimmed my fittings with cuticle scissors to keep them just above tooth contour, and wiped any excess from gums.
471789
I usually get about 2-3 bleaching treatments from each syringe. I also keep them in the refrigerator, per Opalescence, in order to keep them from turning. I honestly don't know how long they stay good for because I use them within a few days after twisting the individual cap off. I store them in the refrigerator for at least 6 months before I run out. I haven't seen them go bad. I hope this helps.
471790
I believe each syringe is intended as a single use. They are smaller than they appear!
185044
Depends, I do several mosquito treatments each day with a gas powered blower and pesticides. They typically last about to 2 to 4 weeks granted you seal up the cartridges while not in use (they are passive filters constantly working). Once I start to smell a little exhaust from my machine I know its time to change cartridges.
1929448
Mine came with a syringe, and no instructions. The syringe was garbage and bent easily: worthless after one use.
1982432
Only comes with 1 whitening gel syringe and depending on how much product you put it'll lasted me 3-4 weeks & that's 4-5 x a week
1744258
If you use it twice a day as it says on the bottle it will last 3 weeks to a month. If you are a slacker like me, it will last two months.
1386610
Again, depends on daily use and amount but I would say one can lasts around 3 months or so if used daily.
161861
I do not know, the longest I had an open bottle is about 1 1/2 weeks with no problem.
1524866
I'm not the seller, I purchased some Opalescence. If there was an outer box, that's where the expiration date was. It's not on the syringes, nor on the plastic sleeve they are kept in. Sorry, I'm not much help. Maybe you can ask the seller.
1691846
One bottle is supposed to be a month's supply. If I'm careful counting drops it will last that long for me. If not I will usually get about 28 days.
1409877
Sorry I cannot give you a straight answer. I used my for my abdomen once a day and it lasted 45 days.
1559238
I am a coffee & red wine drinker that smokes. So while I'm not sure how dark you mean by "dark", I'm still going with yes, it will work. Timeframe depends on your personal tolerance level. If you can handle doing it every day, I'd say that 4 syringes (three applications each) would make an amazing difference in 12 days' time.
494337
If taken twice a day, it will last around 18 days. I am only taking once so 1 bottle easily last for just over one month.
1221296
it used to last 6 to 8 weeks this year and last if you can get it to spray out of the bottle it may kill and deter mosquitos etc for 3 to 4 days 2 days for sure. Not worth the trouble any more. Went back to fogging. Too bad this used to be an excellent product.
1201273
roughly one week depending on how much you use. 5-7 days is a good estimate.
1301163
you can purchase a 30 day or 60 day supply and they do last about that long. The results, in my opinion, lasts as long as you continue the process correctly.
968529
This is what I got when I asked the seller:"On each syringe is stamped in clear by the plugger an expiration codeExample is b045B for batch04 is month5 is year"
2278192
It all depends on your condition, and how often your doctor recommends. I have to take 2 a day, so a box of 42 lasts 20 days. So it all depends how long you will be gone, do the math. Hope this helped you.