The efficacy of Crest WhiteStrip?

The crest white strip supreme work very well. One thing that can make them less effective is if your dentin is showing through. White strips can't bleach Dentin. Dentin is the layer under the enamel. And in this case you would be a good candidate for veneers.

it depends on what kind you bought. the strongest whitestrips are 14% hydrogen peroxide and they are called supreme, but you can only get them from a dental office. those will work 4 times better than from the store.

Im not gunna lie,That stuff sucks,I use Listerine Whitening and it works great.Try that.

Is it just one tooth? If yes, that tooth may be dying - see a dentist.
The dentist can drill a small hole and put bleach inside the tooth but only if the nerve is dead.
If your tooth is fine, but just yellow, and the strips do not work, try Opalescence gel (you must get this from the dentist). It worked for me.

it relies upon on what type you acquire. the main efficient whitestrips are 14% hydrogen peroxide and that they are referred to as suitable, yet you are able to in basic terms get them from a dental workplace. those will artwork 4 cases extra desirable than from the keep.