Wash North Face Denali Jacket How To Keep North Face Clean?

How To Keep North Face Clean? - wash north face denali jacket

I will be a yellow jacket North Face Denali and begins to dull. Not like the yellow it was when I bought it. How can I wash my jacket to be as it was when I bought them?
In addition, it has hills and flat on his back. How can the jacket "Fluffy" and get the songs?