My Whitestrips is part of the NS Trading Group. We are a small company located in England and Wales. Our company registration number is 07939451. We specialise in the supply of niche health and beauty products importing popular products from the US into the UK. We offer a money back guarantee on all sales of Whitestrips. If you are not happy after your first usage you can return the remaining strips to us for a full refund. Crest Whitestrips have become the number one selling teeth whitening product in the US. The product is used by placing a disposable plastic strip directly onto the teeth that contains an enamel safe whitening gel.