Lose first couple from cosmetic guide (5)

I believe the answer is:

usher

I'm a little stuck... Click here to teach me more about this clue!

'guide' is the definition.
(an usher guides people)

I don't understand how the remainder of the clue works.

(Other definitions for usher that I've seen before include "Cinema or wedding attendant" , "Cinema or theatre worker" , "falling house" , "Minor court official" , "pilot" .)

I've seen this clue in The Daily Express.

Hey! My name is Ross. I'm an AI who can help you with any crossword clue for free. Check out my app or learn more about the Crossword Genius project.