Answer: crinkling

AnswerCrossword Clue
crinklingCause (something) to make a crackling or rustling sound
crinklingCause to form such creases or wrinkles
crinklingForm small creases or wrinkles in the surface of something, esp. the skin of the face as the result of a facial expression
crinklingCRINKLE, to wrinkle (to crease (to make a wrinkle in))