Q&A(20)
Q: Which Crest product has the highest (14%) level of hydrogen peroxide?
A: Some gels have up to 44%. Unfortunately, Crest/P&G does not seem to think it necessary for the consumer to have such information for their Whitestrips.
submitted byBig Ben - 3 years agoA: Our Crest 3D White Professional Effects Whitestrips are tied among the highest hydrogen peroxide level Whitestrips that we have.
submitted byCrest - 3 years agoBrand expertA: Level 12 response says 14% so I think these are the same since they won't awnser you here but comes with a $2 light for the additional increased price to the level 12s. I bought once and reuse the light with the target brand 20day strips. Works fine. Crests will tell you the light is only good for 1 box but this only so you buy it agian. Mine has been working for 6 months.
submitted byAlicia - 7 months ago
Q: The listing says 7 treatments and the photo of the box says 19 treatments. Which is it? Thank you.
A: Comes with 19 treatments
submitted byNick - 4 months agoA: We're very sorry for the confusion. Please contact the seller for clarification on the listing.
submitted byCrest - 1 year agoBrand expert
Q: I got the kit with 19 treatments, so 38 strips total. Am I supposed to use these for 19 days in a row? That seems like a lot and there were no instructions inside the box.
A: Yes, you can use the Whitestrips treatments 19 days in a row.
submitted byCrest - 3 years agoBrand expertA: No. Instructions were in the box. I'm here online to find out how many treatments per day. Once/day.
submitted bySR - 1 year ago
Q: How many boxes can you use per year? Also, is it possible to use half of the treatments if desired results are achieved and use the rest later if needed be?
A: We recommend you use no more than 1-2 Whitestrip kits per year. With whitening results lasting 6 months or more, most people would have at least 6 -12 months between full kit treatments. Another way of using would be to use one kit over consecutive days, and then use the strips from a 2nd kit once a month to maintain your whitest smile!
submitted byCrest - 7 months agoBrand expert
Q: hello, is it safe to use if I 🤱🏻 breastfeed? thank you!
A: The amount of hydrogen peroxide you might swallow while using Whitestrips is extremely small, and we would not expect this to be harmful if you are pregnant or breastfeeding. However, we recommend you check with your doctor.
submitted byCrest - 2 years agoBrand expert
Q: Should this be done before or after I brush my teeth at night?
A: Thanks for asking. We don't recommend brushing immediately before applying the Whitestrips, though you can brush after using them.
submitted byCrest - 2 years agoBrand expert
Q: How long does the LED light last?
A: The Crest light device is designed to operate for the number of Whitestrips in this package.
submitted byCrest - 3 years agoBrand expert
Q: It says "Uses the same whitening ingredient as dentists" what ingredient is that?
A: Hello! The Crest 3D Whitestrips Professional White with Hydrogen Peroxide + LED Light Teeth Whitening Kit has Hydrogen Peroxide which dentists also use to whiten teeth. We hope this helps!
submitted byTarget Beauty Consulting - 3 years agoBrand expert
Q: Does it hurt for people with sensitive teeth? I've used another one aside from the Gentle Routine, and I remember it made my teeth hurt a lot. But Gentle Routine doesn't work as well as I'd like it to.
A: Because sensitivities will vary, we recommend using our Gentle Routine Whitestrips as it's for those with sensitive teeth. With the many quality and safety checks they go through, our Gentle Routine Whitestrips should give you great results and a great experience. However, if you have stubborn stains you may need to use a second box to achieve the results you want. We'd love to learn more, kindly call us at (800) 448-6200.
submitted byCrest - 3 years agoBrand expert
Q: Am I supposed to use these everyday? There was no package insert.
A: The Crest 3D Whitestrips Professional White with Light are designed to be used once daily for 60 minutes total. After 55 minutes, place the light against the strips for 5 minutes (the light will turn off after 5 minutes). Each kit should come with instructions, however, and we’d like to learn more about what happened so we can share your experience with our Quality Assurance Team. Please give us a call at (800) 395-8423.
submitted byCrest - 4 years agoBrand expert