IMPORTANT: Please read the instructions and watch the tutorial video before making your first attempt. We send you 2 attempts in your initial impression kit (please send back any unused attempts). If you are unable to produce a good impression after 2 attempts, contact us and we will send you replacement putty free of charge (the trays are reusable). If the kit is mailed back to us and the impression(s) are bad/unusable, a $15 charge will incur to cover shipping another impression kit to you.