When Pam's hair is sufficiently dry, she pulls it back and ties it into a loose ponytail.

Then, out comes the makeup bag. She goes for a more subdued look, with lavender eyeshadow and a soft pink shade of lipstick.

She isn't doing this for Eric, or even for Jemma. She does it for herself, because this is how she restores normalcy to whatever situation she's in. When she can make herself look pretty and feel fabulous, then she is in control. And lately too much chaos has been fucking things up, so pardon her while she applies some goddamned mascara.