Amazing!!!
All I can say is wow! I purchased these teeth whitening pens when they were on a brief sale and  boy oh boy do they work!! I’ve been drinking a lot of coffee lately and I noticed my teeth turning a bit stained, but I used the whitening pen literally for two days (morning & night) and I already see a major difference!!! Definitely a great buy and I will buy them again! Also, I didn’t have any discomfort or sensitivity… so that’s a major plus for me! 😉😊
Rating: 5 stars