Review on Krucasano Teeth Whitening Pen Kit (4 Pens) - Effective, Painless, and Non-Sensitive - Get 🦷 a Beautiful White Smile with Natural Mint Flavor and Easy to Travel with Whitening Gel Pen! by Shauna Bishop

Firstly the delivery was very fast. The pen is very easy to use. I've been using it for over two weeks and I'm happy to report that I started seeing results after about a week of use. As instructed, AVOID contact with gums. When I first applied it, I forgot to keep my mouth wide open and immediately closed my mouth; do not do that! Be sure to keep your mouth wide open for about 45 seconds after application or the gel will rub off your mouth. I haven't had any reactions or side effects from using this pen. I think the price beats the competition. I definitely recommend this pen!