Euthymol Teeth Whitening Strips Kit- Booster Gel (0.16 Fl oz) & Strips (5 Count), Visibly Whiter Teeth in Just 5 Days, Remove Coffee Stain, Korean Oral Care

I sorta dropped the ball on using them consecutive days in a row but they still worked well for me. Using the comparison strip, I think I improved by around 4 shades. It's only hard to tell because my teeth were at the yellowest shade, and some of the ones in the middle look really similar. The booster isn't spicy and the sensitivity afterwards isn't extreme. It will be a little hard to use if you have big teeth.

Already seeing results after one use! I have very sensitive teeth so was weary of teeth whitening products, but I still wanted to try. Heard good things about this product and gave it a try. This product is very easy to use (I am horrible at following directions but was successful with this one!) and for me I could tell my teeth color is already better with one use. My teeth are not irritated after using this. Highly recommend for people with sensitive teeth who needs teeth whitening!

I was very disappointed to find that the only English instruction is a label on the back of the box, while the bulk of the instructions and all the Q&A about use are not in English. The tooth strips are skinny and not very easy to cover my teeth. During the LONG 30-minute treatment time, the strips kept slipping, and the taste was not a very pleasant experience. I tried using the treatments once, but I had so many questions that I couldn't feel comfortable without full instructions, so I couldn't evaluate their effectiveness, whitening, or overall quality.

Seems to make a difference after a few uses. Feels fresh and easy to include in my routine!

I am not a regular teeth whitening person but I thought that this product would work if I kept up use of it. I have sensitive teeth and did not experience any extra sensitivity from using this product. Whitening was minimal for me but like I said I would need to continue use for longer to get better results, I think.

Not only is it a five day process but you do this for more than an hour everytime which is not a problem to me because teeth whitening aren’t always an easy job. It did lighten my teeth a little and definitely would try this process again in a couple of months for maintenance or just to lighten it more. The taste is a little bad but tolerable. I also like patting my teeth with a clean towel or tissue to dry it before application.

The old-fashioned vibe of the packaging and of the brand name drew me to this product. I also have to admit to being curious about the pink gel that purportedly acts as a tooth enamel lightening agent. I have now tried the product and wish I liked it better than I do. The instructions that came with the gel (called “booster”) and strips (termed “patches”) are 100% in Korean, a language I don't read. The instructions on the back side of the box are in English, the language I do read, however. It appears to me that the Korean instructions are more comprehensive than the English ones. In the English version there are three drawn illustrations with one-sentence instructions under each. One is first directed to put ‘an appropriate amount’ of the pink booster thinly and evenly on one’s teeth. I am not sure how much is appropriate. The tube of gel is obscure plastic, so I can’t tell how much remains after each application. I had some gel left over after five days though I felt I had plenty on my teeth each day. The second illustration’s text tells one to attach the patches to the teeth. However, with the booster under them, these narrow patches drift all over the surface of the teeth. They do not cover my teeth, top or bottom, but they slip down onto my lower teeth or onto my gums. I had to toss them out before each session was over because they did not stay in place and would become deformed, useless. The third directive is to check your teeth to see them become whiter; recommended time, 1.5 hours, every day. The illustrations show a mouth with pink teeth that have become white. I have not noticed any significant whitening after five days of use, though some coffee stains have diminished. Nothing suggests that oral trays might be needed when using the booster liquid. Since this pink gel is supposed to remain on the teeth for one and a half hours each time it is used, trays would be a good idea. None come with the kit. The booster gel slid down my teeth and into my mouth over time; I spit pink stuff into a sink often during the 1.5 hr. waiting period, and I wore a napkin as a bib so as not to stain my clothing. I did not want to venture into public while waiting for the pink to turn white. I had not considered this when I ordered. Sometimes, when using bleaching strips of a different brand, I have gone out because I don’t think that clear strips are visible. The directions say that “using the patch and booster together gives a 67% more improved effect.” Does this suggest that the results will be 67% better than using the booster alone? If so, the patches should be made to work better with the booster. Perhaps this is the reason I had what I consider to be poor results; the patches did not adhere. I will not order this Euthymol Whitening Program kit again. I would have liked tips on how that booster gel could better work with the patches. The product requires a significant wait-time and I have not seen results. The pink colorant was a disincentive to spending wait-time in public for me.

I really liked this whitening kit, although I was a bit skeptical at first. Seems to work VERY well, and only takes a few days to remove old stains such as from prolonged use of coffee. Simple instructions and well packaged. The initial application doesn't taste half bad, and you can save yourself a LOT of money from going to a dentist for much the same thing. Liking the pearly whites, and will likely go though this a few times a year as a part of general hygiene and maintenance...