Great for everyone, including first-time whitening. Two technologies in one easy apply-and-go ampoule make this whitener penetrate like no other, and it still takes just minutes a day! Designed for everyone living a too-busy life. even if you ve never whitened before, you ll find it easy and effective. It s safe, portable, doesn t cause sensitivity. and takes just 6 days. The 6-Day Double Action Whitening System combines two powerful, patent-pending formulas in our convenient Ampoule Technology® delivery system, to penetrate teeth and effectively lift stains, even from beneath the surface. Maybe your teeth have never been whitened, or whitening has never worked effectively for you.