How long does crest emulsions last
Whitening emulsion results vary with the starting stain, product use, diet, and whether the colour change is in natural teeth or restorations.
The short answer
Whitening emulsion results vary with the starting stain, product use, diet, and whether the colour change is in natural teeth or restorations. A whitening emulsion is a peroxide-based product intended to contact the tooth surface and alter stain molecules.

What is the direct answer?
What does this question mean?
A whitening emulsion is a peroxide-based product intended to contact the tooth surface and alter stain molecules. The visible effect is not permanent because new external stains can accumulate and the natural tooth structure does not resist colour change indefinitely.
What can you do next?
Use the product only as its label directs, keep it away from the gums, and pause if marked sensitivity or soft-tissue irritation develops. A dentist can identify whether staining is external, internal, decay-related, or caused by a restoration.
When should you seek dental care?
Seek dental care for pain, a cavity, cracked enamel, gum injury, or colour change limited to one tooth. A product cannot correct decay or replace a discoloured crown.
What should you ask the dentist?
Ask which stains the emulsion can address, whether your restorations will match, how to manage sensitivity, and what maintenance plan fits your teeth.
Frequently asked questions
What is the first clinical step?
Ask which stains the emulsion can address.
Can home care replace an examination?
Home care may reduce irritation, but it cannot diagnose or treat a damaged tooth, deep infection, or advanced gum disease.
