this review title is: good so far and the content is: love the convenience of this pen just wish the gel would come out a better way first off it took fivever to expression the gel out i think i clicked the bottom times before a tiny bead of gel started to appear i had to aggressively click and slam the pen onto the counter to get more product out once i was finally able to get enough product out i dried my teeth after flossing and brushing first and wiped the silicone bristles onto my teeth from premolar to premolar on my upper and lower teeth i used the box it came in to fan and dry off my teeth i did this before bed time so i wouldn t have the urge to eat or drink after the gel will become stringy once your inner lips and cheek touch the gel and there s a mild taste to it so far i ve used this pen nightly for days and i ve seen a tiny bit of results you re supposed to use it twice a day for weeks i haven t experienced any sensitivity from the gel partly because i ll use sensodyne toothpaste to brush and the gel is formulated with potassium nitrate that helps prevent sensitivity other good ingredients include xylitol and natural antioxidants overall good product just need a better way to get the product out without having to click it twisting would be a better option and maybe transparent packaging so you know how much product is left.there are other information for this review, one is this reviewer did not purchase it and the other is 1 people think this review is helpful.