He was, together with Lovis Corinth and Max Liebermann, one of the foremost representatives in Germany of the plein air style.

He travelled again to Paris in 1900, where he was represented in the German pavilion of the world exhibition with the work Scheherezade, and was greatly impressed by the paintings of Édouard Manet.

A trip to Egypt in 1914 resulted in 21 oil paintings in a fresh bright style, as well as numerous watercolors and drawings; on the return journey he stopped off in Italy.

He is buried in the burial place of the family Finkler east of his house, the so-called Slevogthof (with wall paintings) at Neukastel.

In 2020 the Saarland Cultural Heritage Foundation announced the return of the following Max Slevogt works to the heirs of Julius Freund, whose family was racially persecuted as Jews after 30 January 1933 and forced to sell under the Nazis.