The defining feature of cradle cap is a patch (or multiple patches) of scaly skin that form a crust and then flake off. It typically occurs on the scalp and face (mainly the eyebrows), but ...

but most people know it as cradle cap. It's that flaky, yellow, scaly rash on their heads that shows up at a few weeks old, that can even extend down to their eyebrows and the sides of their face and ...