Alma 3:4

And the Amlicites were distinguished from the Nephites, for they had marked themselves with red in their foreheads, after the manner of the Lamanites; nevertheless they had not shorn their heads like unto the Lamanites.

The Amlicites looked different from the Nephites. They had marked themselves with red on their foreheads, just like the Lamanites did. But they did not cut their hair short like the Lamanites.

You could tell the Amlicites apart from the Nephites by the red marks they painted on their foreheads—just like the Lamanites used to do. But unlike the Lamanites, they didn’t shave their heads.