ive recently unpacked my loose figures from moving and noticed that the white figures have started to yellow, which i didnt noticed prior to packing when the ywere still displayed. i dont harbor any hopes of restoring them back to their pristine white selves, but any advice on how to prevent further deterioration would be much appreciated. the condition of the packing are as so: - i overlooked to individually seal them in baggies; theyre basically all lumped into a kino plastic bag and were stored inside cardboard boxes. -i paid attention however to put the box away from windows, in a store room. tho my house is not fully air-condition, i dont smoke either. -so i guess the biggest mistake i made was putting al the figures together inside a single plastic bag which was not sealed (i just folded the top and put it inside the box) keep in mind that my collection is only about a year old, so im surprised that theyve deteriorated so fast. any advice on cleaning em (theyre dusty)? can i just use a damp cloth? thank for reading.