Answer:
Against the sun I protect your eyes and am often worn on the face of spies
I am a candy that looks like a shepherdβs staff.
What can you catch but never throw?
It's red liquid but not liquid and it's not red. What is it?
I have three heads. Cut off one I become stronger. Cut off two I become ten.
Whoever made me don't want me. Whoever bought me don't need me. Whoever use me don't know me.