Seems a great price for a toothpaste that finished at top of a few different websites polls for whitening toothpastes. Also a bit cheaper for Subscribe & Save. Standard amazon delivery fees or free delivery with prime.
This is the writeup from goodhousekeeping.com
Claiming to leave the teeth up to four shades whiter in three weeks, this toothpaste is formulated to be "low abrasion". The brand says it strengthens the enamel and prevents cavities too. Coming top in our lab test, it didn't cause any increased teeth sensitivity with our testers. Leaving the mouth feeling clean and fresh after rinsing, some testers compared it to a trip to their hygienist.