Yellowed or stained teeth can significantly affect confidence, and while the market is crowded with whitening products, few are supported by published scientific evidence.
HeySmile Teeth Whitening Strips, sold on Amazon for £19.99, claim to whiten teeth by up to 10 shades after six applications. This result is supported by a study conducted by G. Thomas, T. Badrock and C. Thompson, which used the VITA Bleachedguide, an internationally recognised standard for measuring tooth colour.
According to the study, HeySmile’s whitening gel outperformed a leading competitor. After six treatments, the HeySmile gel achieved an average improvement of 10 VITA shades, compared with six shades for the rival product, Quick White.
The researchers concluded that the HeySmile gel was more effective at whitening stained enamel samples over the same number of applications. The brand also claims that some users may see visible results after just one treatment.
Each pack contains 28 strips, designed for both upper and lower teeth, providing 14 applications at a cost of around £1.43 per use. The strips use PAP whitening technology, which the company says helps brighten teeth while protecting enamel and reducing the risk of sensitivity.
The product works by oxidising stain particles caused by substances such as coffee, tea and red wine, breaking them down into smaller, lighter fragments to improve tooth colour over time. HeySmile also offers a 30-day money-back guarantee for unsatisfied customers.
Several alternative whitening products are also available. MySweetSmile Teeth Whitening Strips are currently priced at £24.99 and offer 21 sessions using a similar PAP-based technology. Crest 3D Whitestrips Supreme Bright, priced at £34.99, provide seven treatments and require 60 minutes of daily application, with claims of removing long-term stains.
On Amazon, HeySmile Teeth Whitening Strips hold an average rating of four out of five stars. Many reviewers praised their ease of use, lack of sensitivity and noticeable results after a few applications. Some users were less impressed, describing the results as average, though overall feedback highlighted convenience and comfort as key strengths.
