ColgateOptic White Express Teeth Whitening Pen, Enamel-Safe Tooth Whitening Applicator, Helps Whiten Teeth in As Little As 1 Day of Use, 7 Day Whitening Treatment, 0.08 fl oz

This does work well. I use to use the same product, but it was the overnight formula, which I liked being able to get the whitening effect for the entire night, where as this new formula is only for 1hr. Not sure if it is more potent, or why this has changed, but it works regardless. They also changed the tube from a metered push button with click, (which fails easier) to a simple dip in brush.I drink a lot of coffee and I do smoke, this whitener does make a noticeable difference in shade/color on the very 1st use. My teeth are somewhat sensitive, and there has never been any negative effect on my teeth using this. I recommend it, as well as this seller that shipped fast.

Be sure and follow the instructions! I try and use it everyday. I am seeing much improvement slowly for me .

Worked pretty well after a few times of use! Love it

The pen is very easy to use and convenient for on-the-go application. I liked how small and portable it is, making it easy to fit into my bag or use quickly during my routine.Unfortunately, the results did not meet my expectations. While the product claims to whiten teeth in as little as one day, I only noticed a very slight difference after several uses. Additionally, it made my teeth quite sensitive to cold water, which was uncomfortable. I would suggest improving the formula to be both more effective and gentler on sensitive teeth.This product has potential, but it didn’t work as well as I had hoped. While it might work better for others, it didn’t provide noticeable whitening for me and caused sensitivity. I would hesitate to recommend it unless the formula is improved.

The media could not be loaded. I recently tried the Colgate Optic White Express Teeth Whitening Pen, and I have to say, I’m impressed. Whitening products can be hit-or-miss, but this one genuinely delivered.The first thing I noticed is how easy it is to use. You just dry your teeth, apply the gel with the pen’s precise applicator, wait for an hour, and then brush off with water. I’m usually skeptical about “quick results” claims, but after the first use, I could see a subtle difference.Another big plus for me was the lack of sensitivity. I’ve tried other whitening products that left my teeth feeling sore, but with this pen, I didn’t experience any discomfort. It’s also enamel-safe, which was reassuring.I love that it’s small enough to throw in a bag if you’re traveling or out and about. I don’t need to worry about trays, strips, or extra steps. For anyone looking for a convenient and effective whitening option, this pen is worth trying. It’s easy, it works, and it doesn’t leave you dealing with any of the typical downsides!

No difference in my teeth, also doesn't stick very well and just rubs off as soon as your lips touch your teeth, even after letting it dry for a minute.

I recently tried the Colgate Optic White Express Teeth Whitening Pen, and here’s my honest take. The pen is easy to use and has a convenient applicator that makes it simple to apply directly to the teeth. I noticed some whitening effects after just a day of use, which was impressive. After using it for the full 7-day treatment, my teeth appeared noticeably brighter, though not dramatically white.One thing I liked is that it’s enamel-safe, and I didn’t experience any sensitivity, which is a big plus. The gel has a mild taste and doesn’t leave any aftertaste. However, the whitening results weren’t as dramatic as professional treatments, but it’s a solid, affordable option for anyone looking for a subtle improvement in their smile.Overall, it’s a great product for those seeking gradual whitening without irritation. Would recommend it for light stains or a slight brightness boost.

Bought this in store and it worked amazing. Then ordered from Amazon because it was a little cheaper and it was ineffective and a little dried out.