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If you didn’t manage to pick up everything you needed in the Prime Day sale then fear not; MySweetSmile’s bestselling Teeth Whitening Powder is still reduced by a huge 30 per cent in the wake of the savings event. 

An Amazon bestseller for three years in a row, the whitening powder has been clinically proven to deliver visible results, with some users seeing whiter teeth after just one use. Better still? You can currently grab a six-month supply for under £21.

MySweetSmile Teeth Whitening Powder – 6 Month Supply 

MySweetSmile holds more verified Trustpilot reviews than any other whitening brand in the UK with over 8,000 real customer testimonials and an "Excellent" rating on Trustpilot.

Now 30 per cent off in the brand's extended sale, MySweetSmile's new 3-in-1 formula does more than simply whiten teeth.

Designed to tackle deep-set staining while supporting enamel and protecting gums, the bestselling powder has earned more than 8,000 reviews and has been Amazon UK's number-one teeth whitener for three consecutive years.

This offer ends July 5 at 11.59pm. 

£20.99 (save £9) Shop

The new and improved 3-in-1 formula could leave you with a brighter smile for summer

One of the brand’s most coveted products for delivering a whiter smile fast, the MySweetSmile Teeth Whitening Powder has recently undergone a makeover of its own, boasting a new 3-in-1 formula that whitens teeth while helping to support enamel and protect gums.

And now you can grab the powder and many other MySweetSmile whitening essentials with a whopping 30 per cent off in the brand’s extended Prime Day deal.

But you’ll need to be quick, as this impressive offer ends on July 5 at 11:59pm.

Perfect for those who don’t want to fork out on pricey trips to the hygienist, the MySweetSmile Teeth Whitening Powder is a simple, affordable solution to dull, stained teeth, providing up to six months of treatments and proven to deliver results.

In fact, independent clinical testing carried out under dental supervision confirmed measurable improvements in tooth colour after four weeks of daily use of the MySweetSmile whitening powder. 

Using standardised colour measurement methods to objectively track results, dental specialists verified that the powder produced clinically measurable whitening results rather than subjective changes based on perception alone.

And better yet? Unlike sodium peroxide or charcoal-based tooth whitening formulas, which can damage tooth enamel, MySweetSmile's new 3-in-1 formula is designed to be gentle on teeth.

Prime member can now shop the teeth whitening powder for just £20.99 for 6 months

As well as helping to remove years of staining from coffee, tea and red wine, the teeth whitening powder contains Hydroxyapatite to support enamel and Vitamin E to protect gums, making it particularly appealing to those concerned about sensitivity or ageing teeth.

At the same time, it’s tough on stains, with the key ingredients Calcium Carbonate to remove plaque and other debris as you brush, and natural enzymes derived from pineapple and papaya to dissolve stains that other products can’t reach.

And according to over 8,000 shoppers, the results are jaw-dropping, from the first use. One impressed shopper posted before and after photos following the first try, explaining: ‘This result is from one use (4 minutes of powder followed by my normal brush, floss and mouthwash).

‘I'm so impressed and can't wait to see how it goes. Photos are taken in the same room under the same lighting, there is no additional brightness or change of light/effects.'

Prefer whitening strips? After a new toothpaste? Looking to try enamel serum? Take advantage of 30 per cent off sitewide all MySweetSmile products in this limited-time deal

Another compared the MySweetSmile Teeth Whitening Powder favourably to professional treatments, writing: ‘Well this stuff produced better results after one application that the dental hygienist has ever done and now after 3x usage my teeth look more like they did when I was 30, not 60!’

Available in tasty strawberry and mint flavours, MySweetSmile could be the simple addition to your daily routine that helps you feel more confident showing off your smile this summer.

The deal comes at the perfect time of year for socialising, when calendars start filling up with holidays, weddings, barbecues and family get-togethers, and a brighter smile should make you feel more confident in photos.