ISTA Round Bio-Sponge Filter Rectangle Black 6in LG

ISTA Round Bio-Sponge Filter Rectangle Black 6in LG

Marsoni

M251S

$10.99

Get it in 3 business days with 1 day shipping. Friday, May 29

ISTA Round Bio-Sponge Filter Rectangle Black 6in LGMechanical filtration: Provides excellent filtering effect while oxygenating the water Biological Filtration: Foam material supports the colonization of bacteria Can be used with either an air pump or any external filter Silent operation by reducing air pump noise Easy to install and simple to maintain

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It's a great product that works. I left the strips on for 2 hours. And my teeth were so white, I decided not to use the light. I drink 3-4 cups of strong coffee everyday, and they are still really white (after one application over two weeks ago). My gums were a little sensitive after 2 hours, but that only lasted a few hours after usage. Just be aware if you leave on more than 60 minutes. Then brush and rinse really good. I use their "brilliance" tooth paste as well.

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Reviewed in the United States on June 16, 2025

Verified Purchase

Ems

Dallas, US

★★★★★ 4

DOOOO IT (see before & after pics)

Size: 40 Count (Pack of 1), Size: 40 Count (Pack of 1)

My dentist actually recommended this in contrast to the products offered in office! So I had to try. I was especially interested in a whitening system that would not sacrifice effectiveness for gum sensitivity. Not only could I see instant improvement, but I had no gum irritation whatsoever, not even next day. So that's the two big things that exceeded expectation. A few drawbacks though - (1) Instructions were unclear as to how long to leave the light on, & I didn't realize until after mixed Internet recommendations & testing it out blindly that it automatically times out after a few minutes; (2) the product unfortunately outlasts the light's battery life, so I had to find a $16 replacement LED on Ebay, & (3) the adhesive will strip your dental work fyi. Not cool, but still overall beneficial as a whitener & hundreds cheaper than true, professional whitening. BTW this before and after were taken within a month of each other.

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Reviewed in the United States on April 29, 2026

Verified Purchase

Birmingham, US

★★★★★ 5

Amazing transformation!!

Size: 40 Count (Pack of 1), Size: 40 Count (Pack of 1)

I hardly ever write reviews, but this product has transformed my life. And imonly on the forth day. After the first day it removed so much of my yellow stains. I can't even think about how white my teeth will be when I finish. I called my dentist to see how much it would be to whiten my teeth and she said $500. Are you kidding me? So I ended up trying these white strips instead. I'm so happy with the results after only a few days!! The first picture is the start, then after using the strips 1 time, then after using the strips 3 times. I had to come and post a review immediately. The pictures speak for themselves. And not to mention that I usually have sensitive teeth. So far my teeth don't hurt while using. I will definitely use this product every year. Thanks Crest!!

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Reviewed in the United States on April 10, 2026