They're the easiest route to two trends at once: ombre (which, let's face it, will never go away, at least not this season), and neon, which shouldn't really still be at the top of our beauty hit-list, but so is.
Umberto Giannini has translated its hair-on-the-high-street expertise to stick on manis - and thank goodness.
Our DIY efforts are still leaving a lot to be desired. Dip-dye neon in a second? We'll have that, thanks