Review on 😁 Sparkling White Smiles Advanced Teeth Whitening Strips: Compare and Save with 28 Count (14 Upper and 14 Lower Strips)! by Shannon Myers

I've been using them for 7 days now and haven't noticed any improvement. I used whitening strips a few years ago and noticed a difference after the first 2 days so I found it odd that they wouldn't work all the time as a lot of the reviews I read said they had 6% peroxide contained what should be the active ingredient in all whitening strips. After looking at the ingredients list on the packaging, I found that peroxide wasn't even listed as an ingredient. So I'm wondering why there are so many reviews of this product on this site claiming to contain 6% peroxide. Where exactly do you get this information? I even saw a review complaining that they ONLY have 6% peroxide, but the attached picture of the box clearly shows the ingredient list and the peroxide is definitely not listed.