There's a tiny sticker on the dryer that shows how to move your hands up and down through the curtain of air. I think over time, the sticker just fades away or

There's a tiny sticker on the dryer that shows how to move your hands up and down through the curtain of air. I think over time, the sticker just fades away or something. But with all things UX, once you know exactly how to use, you never look at the 'instructions' again