Since your smile is one of the first things people notice about you, Diamond Brite Smile's professional take home whitening kits is one of the best investments you will ever make. Over time, even with regular brushing and flossing, your lifestyle (drinking coffee, tea or smoking) and the natural aging process can stain your teeth. Our product is the maximum strength that can be self administered without going to a dentist. We use 44% carbamide peroxide, made in the USA and FDA compliant. This is a complete kit that may be used up to 10 times and includes a bonus Touch Up Pen. At Diamond Brite Smile, our single purpose is to help you restore your naturally brilliant smile. You will be thrilled with the results.