I look at mine every once in awhile, but that's it.
Akrapovic recommends just wiping it down with a damp cloth. That's all I use on mine on my Ninja 1000. To me the key to any cleaning is to clean it every time you get back from a ride.
Probably if you contact Area P they would tell you if any care is needed and what works best to prolong life, if you do contact them let us know what they say. I only wipe down my CF Muzzys with a water damp micro fiber towell...
A thin coat of any good quality Automotive wax will keep the finish looking great (just like it says in the instructions). Even a quick wipe down with Lemon Pledge will do it. That's actually what we use to clean them prior to packaging. Area P mufflers do not have a seperate clear coat like some other manufactures that can peel or "yellow" over time. Our UV protection is actually incorporated into the resin itself. We've got mufflers out in the field with over 10 years on them and still look like new.