Colgate optic white professional touch up kit
A peroxide whitening touch-up kit lightens natural teeth, but its instructions, contact time, and risks depend on the exact formulation and your oral health.
The short answer
An at-home whitening system places peroxide gel against natural teeth; the exact applicator, concentration, wear time, and schedule come from the package supplied.

What is the direct answer?
What does this question mean?
Follow the current label, apply only the stated amount to tooth surfaces, keep gel off gums, and stop if marked irritation develops.
What can you do next?
Have cavities, gum disease, ulcers, unexplained pain, and restorations checked before repeated use; seek care for severe pain, blistering, or swelling.
When should you seek dental care?
Ask which teeth are natural, whether restorations will mismatch, and how the product concentration and schedule fit your mouth.
What should you ask the dentist?
Peroxide can whiten natural enamel and dentin.
Frequently asked questions
No. Longer contact can increase sensitivity and gum irritation without replacing the labeled schedule.
Will it whiten a crown or filling?
