(Bloomberg) -- Galderma Group AG shares slumped the most in more than a year after the US Food and Drug Administration turned down the Swiss dermatology firm’s rival Botox treatment Relfydess.

Galderma Provides Progress Update Regarding RelabotulinumtoxinA Regulatory Submission in the United States

(Bloomberg) -- Galderma Group AG shares slumped the most in more than a year after the US Food and Drug Administration turned down the Swiss dermatology firm’s rival Botox…