[This review was collected as part of a promotion.] I was nervous to try this product because I have very sensitive teeth and whitening products usually bother me. It was easy to apply, dried quickly and didn’t leave a bad after taste - I felt like I had nothing there. I will be keeping it in my purse and excited to see results!

[This review was collected as part of a promotion.] So the packaging was nice, the effectiveness is doable. I would say if you don’t eat or drink constantly, then you would like this particular product. I like it but waiting an hour for the results are a little long, but I’m slightly inpatient.

[This review was collected as part of a promotion.] I’ve been using the Crest 3D White Teeth Whitening Pen for four days and I’m pleasantly surprised. I’m a daily coffee drinker, so I feel that coffee has stained my teeth somewhat over time. I feel like this whitener has started to remove some of this staining. It says to use twice a day for at least 14 days to see best results, so excited to see what my teeth will look like in 14 days. It’s quite simple to put on, taste isn’t great but not awful.

[This review was collected as part of a promotion.] This is a great product to use for touch ups or to take on the go. I do find it hard to time consumption with this since you have to wait 60mins for full effects but its still a great alternative if whitening strips hurt too much.

[This review was collected as part of a promotion.] So easy to use, love the whitening pen and light duo. The strips are usually too strong for my sensitive teeth but this pen and light works wonders. 10/10 I really love how easy it is to use. Brush on and sit for 30 minutes before using the light. The light part is like 5-10 minutes, I always forget to keep track of time.

I typically use the Crest Strips but I keep this one with me when I travel or just on the go as I'm a coffee drinker. It's a tad pricey for what it is but I try to avoid teeth discoloration so I tried it out. I don't think I'd buy again but that's just because I often forget to use it.

The Crest 3D White Pen is a great product for quick, on-the-go teeth whitening! It's easy to apply and doesn't leave a strong aftertaste, which I appreciate. After consistent use, I did notice my teeth looked a bit brighter, which is exactly what I was hoping for. However, the results aren't as long-lasting as I'd like, so I find myself needing to reapply often. It's a good solution if you need a quick boost in brightness, but for long-term whitening, there might be other options. Overall, very good for short-term use!

I use this pen before I put on my night guard (to keep me from grinding my teeth) I wake up with whiter teeth. I am not convinced it's different than any other whitening pen but it works well with night guard. If you have sensitive gums it might be too harsh.

[This review was collected as part of a promotion.] i absolutely loved this product and how easy it is to work with. saw results after just a few days of using it! would highly recommend to friends. great for on the go.

[This review was collected as part of a promotion.] I dont have any issues with the pen. It was gentle. I didn't have any sensitivity issues when using this. Although it didn't whiten very much, it did whiten a little bit.