Crest Whitestrips provide a gradual whitening and results may vary from user to user. Some people may start to see a noticeable difference right away while others may take a little longer. Everyone's teeth are stained for different reasons; aging, diet, smoking, drinking coffee and tea are a few reasons why teeth aren't as white as we would like. If you have more stubborn stains, it may be necessary to use a second box of Crest Whitestrips to achieve your desired whitening results.

If you would like to try a second box of Crest Whitestrips at no charge, simply return the original UPC symbol from the bottom of the Crest Whitestrips box within 60 days of purchase, include your complete name and mailing address, place in a stamped envelope and mail to:

Crest Whitestrips Regular Satisfaction Guarantee Offer
P.O. Box 900002
El Paso, TX 88590-0002

Please allow 4 to 6 weeks for delivery.

If you prefer to simply receive a refund for your purchase, up to $44, return the original UPC symbol from the bottom of the Crest Whitestrips box within 60 days of purchase, along with the original dated store receipt. Include your complete first and last name and postal address, place in a stamped envelope and mail this information to:

Crest Whitestrips Regular Satisfaction Guarantee Offer
P.O. Box 900155
El Paso, TX 88590-0155

Please allow 4 to 6 weeks for delivery.
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