How do i clean focus ring of my lens?

[sincere]

My lens has these milky stains on the focus ring that i cannot get rid of. At first i tried water with Q-tips and that didnt work. Before i take it any further, i wanted to see what you guys do about these stains. Thanks!

 

[Tinderbox (UK)]

Did you post a photo of the stains as nothing is showing ?

John.

 

[dennybeall]

What are you calling the "focus ring"? Do you mean the metal outside of the lens?