Wrapping or roller placement to create a style sets the hair through:

Using rollers, pin curls, or wrapping to set a style reshapes the hair through a temporary physical change: water breaks the hydrogen bonds, the hair is molded into the new shape, and drying re-sets those bonds in the new position so the style holds until moisture is reintroduced. No permanent chemical alteration occurs. This is why wet sets and blowouts last only until the next wash or humidity exposure. Recognizing roller/wrap setting as a temporary physical process reinforces the styling-science theme of the exam.