I've had my HIPS TK armor for, about 8 years, now. I've been turning a blind eye to the yellowing parts, although I keep the armor inside a tub, in my closet. No light. I only get the armor out for when trooping. The odd thing about the yellowing is that my chest piece seems fine, but the back place has been the most affected. Same goes for my back waist belt and most edges. Since I'm going to restore a lot of the pieces, I figured I'd restore the white, too.   Has anyone dealt with th