Wave caps help keep your hair in place while you sleep and protect it from the drying effects of your cotton pillow. To stay in place during all of your tossing and turning, wave caps must fit snugly. Unfortunately, this often means that the seam of the wave cap leaves a line in the middle of your forehead -- a line that can stay conspicuously in place hours after you go out in public.
Fold the silk scarf horizontally until it's roughly 1 inch wide.
Tie the scarf around your forehead horizontally over the area where the wave cap's band usually sits.
Put your wave cap on as usual. The scarf will cushion your forehead and prevent the wave cap from making lines.