Soft Soap - 6 Boxes, Missing One White Cloth - As Is

Show 3 Dirty Handkerchiefs. Place them inside the Breeze Soap Box. Shake Well. Invert the box and remove 3 Clean Handkerchiefs (only 2 supplied, 1 is missing). They think the dirty ones are still inside. Shred the box. There is nothing there. You really must have cleaned them!?

6 Boxes and 3 "stained" hanks
1 regular white hank (another is needed)
1 gimmicked white hank

No instructions But you won't need any. Reading the effect and looking at the special hank will tell you all you need to know on how to do this classic effect.