These two companies are FRAUDS and charge you illegally. I purchased a free trial after reading a story on the internet that a mom used these two products to whiten her teeth and only purchased a free trial! Yeah right...far from free. I paid what I thought was a $1.95 and $0.95 shipping fee for the free trials, but then after looking at my credit card bill, I was charged weird amounts for weird things that I had no idea what they were. Every week I kept getting charged $92.37 and $79.28 in addition to other charges from other companies. What they do is change the name of the charge and amount and in the long run they are screwing you over!!! DON'T PURCHASE ANY FREE TRIALS FROM DAZZLE WHITE OR DENTA WHITE!!! IT'S A SCAM AND BIG TIME FRAUD!!!