“I was too young to be using my mum’s expensive perfume and I couldn’t afford my own, but I could afford to buy Impulse,” says Natalie, 34. “If I was going to a sleepover or a cinema ...

Suddenly, the fragrance shop on San Francisco’s Fillmore ... making it perhaps the cheapest impulse purchase you can find on either Valencia or Fillmore Street, the home of its other location ...