Our Signature SmileLABS™ LifeWhite Home Whitening System features 10 individually sealed vials of our proprietary Extra-Strength teeth Whitening aftercare Gel, 3 thermo-forming impression trays and Before & After Whitening Treatment Instructions. This kit allows up to ten, 60-90 minute treatments, although most people get the whitening results they want in half or less of the maximum number of daily treatments in the Kit. Because the Extra-Strength SmileLABS™ Cosmetic Teeth Whitening Take-Home Gel has a refrigerated shelf life up to 2 years, the remainder can be used for another whole treatment regimen or for touch ups.