Pils drunk by nurses? Shock horror, for some (5,4)
I believe the answer is:
split ends
'shock horror for some' is the definition.
(shock can mean a mass of hair)
'pils drunk by nurses?' is the wordplay.
'drunk' indicates anagramming the letters.
'by' says to put letters next to each other.
'nurses?' becomes 'tends' (I've seen this before).
'pils' anagrammed gives 'spli'.
'spli'+'tends'='SPLIT ENDS'
(Other definitions for split ends that I've seen before include "signs of poor hair" , "problem with locks" , "damaged hair" , "Slip tends to create unsightly hair condition" , "Dry hair" .)