The most important fact you need to know about us is that we are a FDA COMPLIANT, USA DENTAL LAB, Selling Only USA Made Products. Many online retailers selling gel for low prices are often distributing for a overseas, Unregulated company selling, inferior products. You do not know what you are getting. Buying direct from our Lab, You ALWAYS get what you pay for! 5 LARGE refill syringes is enough gel for 2-3 full 7-8 day treatment cycles! Results are most often seen after the 1st to 2nd day! Unlike other gels, you only need just a little gel per application, That's it! No need to flood your trays with gel. This is professional strength teeth whitening gel, designed by dental professionals, for dental professionals. Zero Discomfort! Real Results! This is what we specialize in. We only sell high grade products, this way our customers get what they are after, a Fast White Smile! We also have a website whitersmilelabs and a Facebook Page, the link is on the site. Enjoy your new smile, and remember a low cost means low quality, don't let cheap gel fool you. We stand behind our products 100% with a full money back guarantee! We ship out SUPER Fast! In most cases, Your order ships out same day! Customer Satisfaction is number one! we offer 24 hour customer support, Please enjoy your new smile!