Seafront centre hairstyle (4)
I believe the answer is:
afro
'hairstyle' is the definition.
(afro is a kind of hairstyle)
'seafront centre' is the wordplay.
'centre' says to take the centre.
The central letters of 'seafront' are 'AFRO'.
(Other definitions for afro that I've seen before include "Curly hairstyle" , "configuration of locks" , "Hair-style from Dark Continent" , "One cut" , "Shock description" .)