I don’t care if this protects pig from sunburn? (2,4)
I believe the answer is:
so what
'i don't care' is the definition.
(I've seen this before)
'this protects pig from sunburn?' is the wordplay.
I cannot really see how this works, but
'pig' could be 'sow' (I've seen this before) and 'sow' is found within the answer.
The remaining letters 'hat' is a valid word which might be clued in a way I don't see.
This may be the basis of the clue (or it may be nonsense).
'if' acts as a link.
Can you help me to learn more?
(Other definitions for so what that I've seen before include "It's unimportant, right?" , "Does it make any difference" , "I don't care" , "Big deal!" , "is that surprising?" .)