i've had it done 2 times now. 1st time was last week, 2nd time was on tuesday and i'm going today. the 1st time i said about 1-2 shade difference, and that's alot considering i'm blinding white. The 2nd time, i saw a bigger diference. It would be cool if i could get the inhome ones. The only bad part is it's pricey, mine was 3 for $59.99. I only did it was for the wedding, so I'm not gonna be keeping it up. Overall a good experience.
Ally