Where huskies may be used to decorate hat (6)
I believe the answer is:
icecap
'where huskies may be used' is the definition.
'decorate hat' is the wordplay.
'decorate' becomes 'ice' (I've seen this before).
'hat' becomes 'cap' (I've seen this before).
'ice'+'cap'='ICECAP'
'to' is the link.
(Other definitions for icecap that I've seen before include "Frozen covering of polar regions" , "Antarctic eg" , "Permanently frozen covering of land" , "what's on mountain peak?" , "Permanent frozen polar cover" .)