I was lucky enough to Trial the Colgate Optic White Overnight Teeth Whitening Treatment Pen.The whitening paste was easy to administer and it did not have an unpleasant taste in my mouth. The compact, brush and gel in one, is portable and tidy, and the price is about as reasonable as a whitener gets.To use the pen you just need to click and turn it twice in the direction indicated over the pen and apply the gel over the top and bottom teeth. You need to click twice each time. The best part is that there is no waiting and you don't even need to rinse it!!I noticed an improvement after a few days, my teeth are definitely whiter and I'm very happy and excited to see further improvements!

As a lover of coffee, something known to cause tooth staining, I was really keen to try this Colgate Optic White Overnight Teeth Whitening pen. Over the course of a two-week trial period, I saw noticeable improvement in the colour of my teeth; my teeth appear visually whiter. The pen was easy to use, with easy-to-follow application instructions. I'm really impressed with the results I have achieved with this product, and when used in conjunction with the Colgate Optic White toothpaste, I have achieved amazing results! I would recommend this pen to anyone who is looking for an at-home teeth whitening product that really works!

Attractive pack and pen.The resealable lid clicks together to keep the pen clean and moist.Easy to apply pen. Once a day (night) treatment. Click the bottom of pen to excrete teeth whitening liquid.Apply liquid treatment with the brush, liberally, one tooth at a time. There were no stinging sensations on the teeth. There was some very slight stinging when the liquid touched the lip but only very minor. Not too concerned. Wiped the lip with tissue.Teeth felt furry afterwards but expected.The furry feeling was erased the next morning upon brushing with regular toothbrush.After applying Colgate White each night for 9 days straight, there was some improvement regarding colour. I took a photo on first application, mid week application and last application ... MoreAttractive pack and pen.The resealable lid clicks together to keep the pen clean and moist.Easy to apply pen. Once a day (night) treatment. Click the bottom of pen to excrete teeth whitening liquid.Apply liquid treatment with the brush, liberally, one tooth at a time. There were no stinging sensations on the teeth. There was some very slight stinging when the liquid touched the lip but only very minor. Not too concerned. Wiped the lip with tissue.Teeth felt furry afterwards but expected.The furry feeling was erased the next morning upon brushing with regular toothbrush.After applying Colgate White each night for 9 days straight, there was some improvement regarding colour. I took a photo on first application, mid week application and last application (last night) and noticed most of the yellowness had gone. In particular, the front smile section of the mouth was noticeably whiter. Also, the spaces in between the teeth appeared whiter, too.