To achieve long-lasting curls, how should hair be set after curling?

To achieve long-lasting curls, it is essential to let the hair cool in the shape of the curl after it has been set. Leaving the hair in rollers until cool allows the curl to take its final form, ensuring that the shape is secured. As the hair cools, the hydrogen bonds that were altered during the curling process begin to harden, locking in the curl's structure. This method not only enhances the longevity of the curls but also helps maintain their volume and definition.

Brushing out curls immediately would disrupt the curl pattern and lead to frizz, as well as diminish the intended shape. Wearing the hair damp contradicts the principle of setting curls properly, as it would prevent the hair from holding its form due to the excess moisture. Likewise, straightening the hair first is not conducive to creating curls, as it would remove any natural wave or texture necessary for curling. Therefore, leaving the hair in rollers until cool is the most effective technique for creating lasting curls.