Users say this viral kit makes teeth up to eight shades whiter over time – and it's now 50% off

[{"id":1283609,"path":"/news/london/heatwave-latest-tuesday-forecast-met-office-weather-hot-b1283609.html","title":"London heatwave LIVE: Temperatures reach 35C in capital as train services go into meltdown","imageUrl":"https://static.standard.co.uk/2026/05/26/10/109df41a5b2ce924f916643abc0dcfa7Y29udGVudHNlYXJjaGFwaSwxNzc5ODcyNTQ0-2.84743877.jpg","standfirst":"The all-time May temperature high was broken at both Heathrow and Kew Gardens, according to the Met Office"},{"id":1283620,"path":"/news/london/tube-strikes-rmt-union-four-day-week-heatwave-b1283620.html","title":"Tube strikes misery to hit London just days after 35C heatwave hell","imageUrl":"https://static.standard.co.uk/2026/04/24/13/2272404284.jpg","standfirst":"RMT drivers are due to walk out on Tuesday June 2 and Thursday June 4"},{"id":1283656,"path":"/news/crime/hackney-murder-towpath-walk-met-police-london-crime-b1283656.html","title":"Hackney murder: Boy stabbed to death as house party fight erupts in east London","imageUrl":"https://static.standard.co.uk/2026/05/26/11/42/hackney-murder.png","standfirst":"The victim was found as police responded to reports of disorder involving machete-wielding thugs in Towpath Walk"},{"id":1283632,"path":"/lifestyle/london-life/thames-swimming-ham-london-b1283632.html","title":"My morning at ‘Costa del Ham’, the first official Thames bathing spot in London","imageUrl":"https://static.standard.co.uk/2026/05/26/9/43/Katie-Strick-Thames-swimming.jpeg","standfirst":"The water looks clear and swimmers are diving in — but watch out for duck poo…"},{"id":1283665,"path":"/news/crime/manslaughter-south-london-1978-b1283665.html","title":"Woman guilty of manslaughter of girl, 5, in south London 48 years ago","imageUrl":"https://static.standard.co.uk/2026/05/26/13/01KSJ3XZZEJEMQ9JCTWDG4BNVW.jpg","standfirst":"Janice Nix, 67, was found guilty of the manslaughter of Andrea Bernard in Thornton Heath, south London in 1978"},{"id":1235653,"path":"/comment/london-heatwave-highest-te...