Review on 💫 No Sensitivity, Travel-Friendly IMMENSE CARE Teeth Whitening Pen (2 Pens) - Effortless, Effective, Painless Treatment for Beautiful White Smile with Natural Mint Flavor! by Katie Alvarado

It's easy to use, just turn the knob and turn on the brush, don't worry about highlighting or protecting your teeth. When using for the first time, the handle needs to be turned a little to fit the brush. Don't be afraid to spin it until it's over and then quickly. After using this for about 4 days I noticed my teeth whitening a bit, it's hard to notice at first, I drink coffee and then wine at night so it's very hard on teeth. I will continue to use this daily until I can last longer. I am happy with this purchase.