Overview
- Amazon lists DRDENT’s 14-pack at £9.99, with more than 5,000 sold in the past month according to the retailer.
- User reviews cited in coverage report noticeable whitening after a few uses with little sensitivity, though one mentioned temporary white spots that faded.
- HeySmile strips cost £19.99 for 28 pieces, use PAP whitening technology, and come with a 30-day money-back guarantee per the brand.
- A published laboratory study by G. Thomas, T. Badrock and C. Thompson using the VITA Bleachedguide found HeySmile gel improved enamel shade by an average of 10 levels after six applications versus six for a rival, noting results on enamel samples rather than in clinical trials.
- Articles compare these strips with alternatives such as Boots’ £35 LED kit and Crest options, while relying on testimonials, product claims, and affiliate links.