good so far [SEP] 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