Green lippy for a perfect pout!

RED, coral, rose — what’s your favourite lipstick colour?

Whatever your answer, it probably isn’t green. But a new lippy in a rather unappealing shade of pond slime could change your mind.

Frog Prince is a colour-changing formula that is green in the tube. When you put it on your lips, the pH of your skin — that is, its acidity level — causes a reaction that turns the lipstick a soft pink. People’s individual pH varies, though, so it looks slightly different on each wearer. You could find your perfect shade!

Not convinced? There’s a cream blush and a lip balm you can try too.

Lipstick Queen, £22, johnlewis.co.uk