What the... are you SERIOUS??? Your manager wants you to change your hair and makeup??? I'm shocked beyond belief. You aren't a flight attendant (I used to be one) where appearances are everything despite the fact that you're really there to protect the passengers.
I'm literally stunned. You could file a complaint with management for this sort of statement. Is this person insane? I'm just trying to think of a reason why anybody would make this sort of comment to a competent nurse who is clean and doesn't smell bad. Is this some sort of Stepford Wives floor???
Ok... time to tell your manager that her requests are not reasonable or simply transfer out. My goodness... I work around some people who look and smell hideous but they are never asked to change their appearance or apply more antiperspirant.
Do not give in and do as she asked. This is sheer manipulation and some freakish power trip on her part. Whether she knows it or admits it or not, this manager is looking to see how far she can go with her position/power.
Run fast to HR and find a new department!