Crest 3DWhite Daily Whitening Serum Overnight Freshness, Leave-on Teeth Whitening Treatment

Works great

Dentist gave me an expensive gel to put into custom mouth guards. Used entire Rx and NADA! Dentist gave the kid this and WOW white teeth! So I used this and WITHIN A WEEK teeth were whiter. Pop it on (use a finger for easier application) and go to sleep, wake up w whiter teeth. People keep commenting on my pretty white teeth and ask me what I use.

I actually love this. I have sensitive teeth and the strips are too much and burned my gums! This stuff is great and tastes like mint. I have translucent teeth and I’ve also noticed a positive effect with that as well. Must use consistently though!!!!!!

I am 72 years old and still have a baby tooth 😳. It is darker than my other teeth due to practically no root. So I have not used on all my teeth but have on this one tooth and it works!!!! I put on at night and before I go anywhere. Lots cheaper than having dentist whiten it!

*Initial Review 9/25/25* I received this on 9/25 and the product expires 11/30. I'll update with my results but I'll have to be very diligent to use this in 2 months I think. I used a napkin to dry my teeth and then I used a dryer on cool to dry my teeth further. I applied the cloudy clear gel to the applicator to keep from contaminating the tube and I used my dry finger tip to apply to my teeth. I don't think I could have gotten a uniformly thin coat with the applicator and I wanted to make sure to work it in between my teeth. The gel is thick enough that it 'glued' in place fairly well. It's thicker than gel toothpastes. I tried my best to keep my saliva away from my teeth while I initially let the product sit. It felt minty cool against my lips and it didn't cause any pain at all initially. After a few minutes I could feel a slight tingle on a couple of my bottom teeth - nothing I'd all painful. The taste is rather toothpaste minty as well. I am going to bed now and it'll be a bit before I expect to see results. I'll update my review, but compared to other gel whiteners, the treatment is definitely better where sensitivity is concerned. Even though this is a nightly product, it states it can be used up to 4 times daily. Since the expiration is so near, I'll use it thoughout the day.

Love the crest whitener. I used it once a day for a while until my teeth became as white as I thought they would get. Now I use it approximately once a week and my teeth still look much whiter than they did before. It’s pretty easy to use. You have to leave it on a little over 30 minutes, but I find just leaving it on while I’m reading a book or watching TV is not a problem. Highly recommend this product.

I always have had a hard time achieving white teeth. I have tried a few different products but was never happy with the results. I came across this and it seemed easy and worth a try. I put it on every night at bedtime and have noticed a great difference even after the first week! Go ahead and buy this, you wont regret it!

As directed, I dry my teeth before applying but the product does not stay on my teeth due to excessive salivation. I spit it out but don't rinse. I wait for 30 minutes before drinking or eating. It's not working because the gel does not stay on my teeth and I'm spitting most or all of it out. I've wasted my money. $35 down the drain, literally. I'm very disappointed.