Saskia Ward has wowed TikTok viewers with her unique beauty tip but experts have said it is "pointless" and "dangerous"A woman with a dazzling smile has revealed her unusual trick to keep her teeth pearly white. Saskia Ward, 24, claims that brushing her gnashers with purple shampoo nearly every night leaves them gleaming by the time she wakes up every morning. The nail technician from Manchester shared her beauty tip on TikTok, with the video clocking up more than 100,000 views from stunned app users. The clip has also inspired others to try the hack for themselves, with viewers commenting:...