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At-home teeth whitening has become a popular alternative to clinic visits, and this Black Friday, shoppers are snapping up offers on whitening products all around the web. One brand offering significant discounts is MySweetSmile, whose sitewide sale promises up to 40% savings and daily free gifts until Cyber Monday.

This teeth whitening powder is one of MySweetSmile’s best-selling products, and it’s currently £17.99, down from £29.99. The easy-to-use powder is said to help reduce stains and yellowing caused by tea and coffee, smoking, and ageing - and according to the brand, its peroxide-free formula is dentist-approved and clinically proven.

All shoppers have to do is dip a damp toothbrush in the powder and brush their teeth for two minutes before rinsing to reveal a

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