The Independent's journalism is supported by our readers. When you purchase through links on our site, we may earn commission.  Why trust us? Extras IndyBest Fashion & Beauty Beauty Smilepro’s advanced teeth whitening kit is my favourite for a brighter smile After just 30 minutes of use, I saw visible results The kit provides enough formula for 30 treatments (The Independent) When it comes to at-home teeth whitening, I’d recommend using LED red- and blue-light therapy and staying consistent to see your pearly whites looking more luminous. After testing a number of the UK’s best at-home teeth whitening kits – from Hismile to Colgate – I found SmilePro’s advanced teeth whitening kit to be the best of the bunch. Surprisingly, it doesn’t lean on peroxide, opting rather for a combination of PAP (a gentle whitening ingredient, with the full chemical name phthalimidoperoxycaproic acid) and LED activation.…