Crest 3D Whitestrips Levels 12 Whiter

Crest 3D Whitestrips Levels 12 Whiter is the strongest course in the range, made for teeth with years of built-up staining from coffee, tea, red wine or smoking — the kind that a short course barely touches.

It uses the same hydrogen peroxide chemistry as professional whitening, over a longer course so the peroxide has time to break down pigment deep in the enamel. Rated to lift teeth 12 shade levels on a dental shade guide. Enamel-safe when used as directed.

How to use: apply the upper and lower strips along the gum line once a day for the time stated on the pack. Complete the full course — the result is cumulative.

Frequently asked questions

Who is this course for?
Teeth with heavy, long-standing staining. If your teeth are only slightly dull, a shorter course will be enough and gentler.

Will it make my teeth sensitive?
A longer, stronger course raises the chance of temporary sensitivity. Skip a day if it becomes uncomfortable and use a sensitivity toothpaste.

Does it work on yellow teeth caused by age?
Partly. Peroxide works on stains in the enamel. Yellowing from thinning enamel showing the dentine underneath does not respond — that needs a dentist.