Look too light? (5)
I believe the answer is:
glare
This might be a double definition.
'look too' is the first definition.
'glare' can be an answer for 'look' (I have seen 'Angry look ' mean 'glare' so perhaps 'look' could also mean 'glare'). I am not sure about the 'too' bit.
'light?' is the second definition.
(thesaurus)
Can you help me to learn more?
(Other definitions for glare that I've seen before include "Shine intensely" , "Blinding light" , "Angry look" , "fierce look" , "Large (anag.)" .)