Hide star before getting protection (9)
I believe the answer is:
sunscreen
'protection' is the definition.
(I know that sunscreen is a type of sun protection)
'hide star before' is the wordplay.
'hide' becomes 'screen' (I've seen this before).
'star' becomes 'sun' (the Sun is a star).
'before' says to put letters next to each other.
'screen' put after 'sun' is 'SUNSCREEN'.
'getting' is the link.
(Other definitions for sunscreen that I've seen before include "recommended for summer picnic?" , "UV blocker" , "UV-blocking lotion" , "summer holiday preparation" , "protection from harsh light" .)