Posh make-up for each customer (7)
I believe the answer is:
shopper
'customer' is the definition.
(shopper is a kind of customer)
'posh make-up for each' is the wordplay.
'make up' indicates anagramming the letters.
'for each' becomes 'per' (I've seen this before).
'posh' with letters rearranged gives 'shop'.
'shop'+'per'='SHOPPER'
(Other definitions for shopper that I've seen before include "One making purchases" , "One buying" , "One may pick up" , "basket" , "Large bag" .)