When was the last time you blitzed through 24,000 sit-ups in a 30-minute session? Or gritted your teeth through 24,000 thigh-sculpting squats? Don’t be alarmed; these are trick questions. We know it’s physically impossible to reach those reps.

While an ever-growing raft of concealers is making it easier than ever to disguise tired eyes, dark circles are still the biggest beauty bugbear for 25% of us. That comes above wrinkles, blemishes, dullness, and a whole host of other skincare woes.

It’s summer’s cruelest catch 22: just as silk shirts, camis and dresses come back in style, a heat wave dashes our sartorial dreams by sending temperatures sky-high. We all know sweat and silk aren’t a match made in heaven, just like sweat and… well, any fabric really.