Colgate Optic White O2 焕白美牙笔

No effects for my teeth, maybe want long time to use

It is a pen with whitening agent. I like that it's a pen because I can just bring it along to wherever I go. It is also very easy to apply and remove. It works but it takes some time to see a noticeable change

It is a pen with whitening agent. I like that it's a pen because I can just bring it along to wherever I go. It is also very easy to apply and remove. It works but it takes some time to see a noticeable change

Good for a vacation can bring out convenience. The effectiveness seems slow, need 3~4 weeks to see the obvious whitening effect. But I think due to safety for swollen purpose so the product no that effectiveness.

Good for a vacation can bring out convenience. The effectiveness seems slow, need 3~4 weeks to see the obvious whitening effect. But I think due to safety for swollen purpose so the product no that effectiveness.

Easy to apply and innovative product as compared to other product in the market. Result is not that significant after 1 week of usage but it has stated that need at least 3 weeks of usage to see the results. Since it’s convenient to use, will continue to use it for a better result.

Dah cuba guna, nampak sedikit perubahan. Tapi tak 100 tapi agak cerah sikit. Cuma kena kosisten lagi.

Provide a thin layer of coating for whitening the teeth when you sleep.

easy to apply - since it is pen type for everyday application, the tip design really make it easier to apply every night. effectivenes - i would say if you want obvious result please go to dentist. this whitening pen maybe work depends on the original teeth color. for me, the whitening effect is really subtle. me = everyday coffee drinker. color not very white, not very yellow either

Colgate Optic White O2 Whitening Pen is easy to use but need to consistently apply it every night before sleep. My yellowish teeth get whiter after 3 weeks of trying, although not 100% turned white. Good experience, recommend to give it a try.

使用3周后，有美白一些，不过有些不均匀也不知道是不是涂抹不好照成还是我的牙齿本来就有色差。使用便利，携带方便，不会有很难闻的味道，这个一定要坚持用才会有效，整体不错。

the Colgate optic white o2 whitening pen is convenient and easy to use. for the first few nights, after using it, it tends to feel sticky around the mouth area but over time, you'll get a grasp of how to use it.

the Colgate optic white o2 whitening pen is convenient and easy to use. for the first few nights, after using it, it tends to feel sticky around the mouth area but over time, you'll get a grasp of how to use it.

Pros: - whitened my teeth - No bad taste - No irritation/pain - neat packaging and small like a pen Cons: - u have to completely dry off your teeth and then paint the solution on each individual tooth (It took a little while to do, and u have to open your mouth wide to avoid saliva and re-wet your teeth as u work hard to brush on the remaining tooth) - The solution easily clumps up in areas on teeth after it dries - a bit hard to brush off the white clumps in the morning. - do not drink or eat after applying the solution, if u feel thirsty, drinks some water first, if you don’t, also drink some water first, haha! coz you are not advised to eat, rinse or drink after you apply. Overall, I am impressed by this whitening tool. If you are okay with the few cons listed above, you should give this a try! Note: I tried to take b4 & after pictures but it does not look prominent in the photos. But I did see a huge improvement in my teeth’s whitening!

Good product, however not that easy to use. The brush needed to be maintained so that it does not solid up. Not easy to reach the hard to reach places. You'll get results after 10 consecutive days of using