Do you use crest white strips before after brushing

Use whitening strips on clean, dry teeth according to the product directions, rather than immediately after vigorous brushing.

Whitening strips hold a peroxide gel against the front surfaces of natural teeth for a specified contact time. The gel does not whiten fillings or crowns, and results depend on the starting shade and the type of discoloration.

Follow the package sequence, keep gel off the gums, and remove the strips when the stated time ends. If sensitivity occurs, pause and ask a dentist about less frequent use, a desensitizing toothpaste, or a professionally supervised alternative.

Get dental advice before whitening if you have cavities, cracked teeth, gum recession, ulcers, significant sensitivity, or extensive restorations. Stop and seek care for persistent pain, burns, swelling, or a strip reaction.

Ask whether the colour change is stain or a tooth disease, whether your fillings will match afterward, and how to place the strip without covering the gums. Ask which whitening method fits your sensitivity and dental history.