It's designed for youth leader in street, guided (6)
I believe the answer is:
styled
'it's designed' is the definition.
(styling is a kind of designing)
'youth leader in street guided' is the wordplay.
'youth leader' becomes 'y' (I've seen this in other clues).
'in' is an insertion indicator.
'street' becomes 'st' (abbreviation).
'guided' becomes 'led' (similar in meaning).
'st'+'led'='stled'
'y' put inside 'stled' is 'STYLED'.
'for' is the link.
(Other definitions for styled that I've seen before include "Designed, arranged" , "Designed; designated" , "Fashioned" , "Called; (hair) shaped" .)