first time user monitoring my progress and reporting [SEP] i have only used this twice so far but i will update as i use it more first off i was really excited to get this in the mail i even took before pictures because i wanted to watch the progression to mega white teeth also i love trying any remedy that is weird and natural garlic for a cold or vinegar for my mirrors etc so i was p ump ed o finally find a fluoride free and bleach free whitenerin a nutshell while this is fun to use is not messy if you follow directions i really have not seen any whitening results yet i used it twice with days rest in between maybe a touch but nothing notable like whiter my teeth feel great probably because this is essentially a super fine powder polish but the whitening really has not shown up yet i have only used it for the recommended brush time make sure to floss after i will post updates as i use it more