I simply store my systems styled on styrofoam heads on the shelf in my closet and they stay looking great. They're not exposed to light not that it would affect them any. I've heard some rub a small amount of Brylcreem on their systems and store them in plastic bags. If you're not washing and wearing a system can't imagine it not staying looking like new regardless of how you store it.

However I have purchased systems from other companies in the past where the hair noticeably faded even though I had the system stored away. This could be why some use Brylcreem when they store their systems. I've never had the fading issue with the Toplace systems they seem to hold their color for a long period of time with minimal fading.