How long does the whitening last?
747075
Does not last too long, you need to apply often during the week for results to last.
1966020
use as long as it takes to whiten, or until you are happy with the whiteness. I leave on for an hour.
615139
I keep the trays in around 30 minutes. I do it daily for a week. It might take 2 weeks depending on how white you want tour teeth. I also coat my gums with petroleum jelly to prevent burning them. I try not to drink coffee or red wine. If I do, I put the trays in that night.
109519
Depends on how often you whitening - it's stronger than over the counter products especially considering the cost.
16713
Wow are you serious? I leave mine on all night and take them out in the morning. Is this why my teeth sting when I do this?Typically about 7 hours. Is this wrong? I often get comments on how white my teeth are though.
1082174
No this product causes your teeth to become very sensitive after you start to use it. And can last as long as 2-3 days. I do like the results but u have to take a little discomfort
16710
You need to start slow. Try 15 minutes at the start. You will have tooth sensitivity (seriously) if you wear it too long. This is NOT a whitening strip that should be worn for an hour!
1607611
I have not noticed any teeth whitening. The xylitol toothpaste was recommended by my dentist and I am very pleased with it. Both my grandson and I use it. Very good product and a best buy here.
152482
Seriously think about this. The time the teeth stay white after whitening depends on you and your lifestyle. The time your teeth stay white is all about how quickly you stain them with what you put in your mouth not the whitener.
979052
You could see immediate whiteness of the teeth after a few uses...it all depends on how white the teeth are in the beginning. Keep in mind these Crest strips are just for a 5 min. gentle routine daily. Good luck!
1128844
I leave mine on for 1 hour, and don't eat anything for 30 min. After I take them out. I have not even used all of them because my teeth got as white as I wanted already. I did not want extremely white teeth though.
16712
Everyone's sensitivity is different.....I can leave mine on up to 45 minutes but instructions say 15 minutes. Be sure not to overload trays or you will burn your gums and that hurts big time!
379102
I doubt if you will need to use them for more than five days. Your teeth will lighten up quickly using the sheer white whitening strips.
1768037
I want to add that I do it for about 4 to 5 days. For best results, use it right after a dental cleaning. Once your teeth get whitened, you can use it only periodically when you feel it is necessary or again after your next dental cleaning. Hope that helps.
986675
Shine Whitening will not make your teeth sensitive for most people. However a temporary side effect of tooth sensitivity or mild tissue irritation is possible but usually transient and may last for a day or two. If you experience tooth sensitivity avoid beverages that contain citrus and hot or cold drinks for the 24 hours.
917300
The whitener is effective enough for me to use once per day for 2 weeks. Depends on cases, people suggest using it every 6 month.
1744418
Every time you put the whitening trays in...I used once a week. You have to put the gel in the trays...put those in your mouth...and then put the light in your mouth over top of the trays...a bit awkward to do.