Vintage 70s Amerikan Climax Pink Gauze Blouse - Small

Vintage 70s Amerikan Climax Pink Gauze Blouse - Small. Garment is shown on a size 8 dress form Both sleeves and the back of the garment have a stain that I believe would come out with washing (they appear to be on the surface), but I am not experienced in how to clean vintage gauze... The staining on the inside looks more permanent, but may also come out?? For shipping: I will pack the garment into a poly bag and then into a box, which is why I have it listed as priority rate shipping