"Non Bathing" trend is based on no longer rinsing oneself every day. Dermatologist Stefanie Derendorf advised to shower less, especially in winter.
Stars such as Jake Gyllenhaal, Mila Kunis and Ashton Kutscher have publicly acknowledged taking fewer showers. Seven to ten minutes is considered the ideal shower time. With a few tricks, you can even save energy while showering. The water should be lukewarm and not hot, but old sweat should be washed off regularly.