Bronzed skin fading on a trip in Argentina? (8)
I believe the answer is:
tangoing
'on a trip in argentina?' is the definition.
(trip can mean to dance)
'bronzed skin fading' is the wordplay.
'bronzed skin' becomes 'tan' (a sun tan).
'fading' becomes 'going' (slowly going away).
'tan'+'going'='TANGOING'
(Other definitions for tangoing that I've seen before include "Taking steps" , "Dancing" , "what obsessive sunbather dreads?" .)