To do Alt + H + E on Mac in PowerPoint, download and install Accelerator Keys, then press Option, followed by H, then E.
Command: Clear All Formatting
This is how to do Alt + H + E on Mac in PowerPoint with Accelerator Keys, the native ribbon and alt key shortcut solution for Mac users who get more done with PowerPoint.
Alt + H + E removes all formatting from the selected text, returning it to the default font, size, and style defined by the slide master. This is useful for cleaning up text with inconsistent or unwanted formatting.