This term is used to describe wrinkling of the outer surface of a paint coating.
It occurs most frequently with gloss finishes on exterior work in conditions conducive to the rapid formation of a surface ‘skin’, e.g. in dry , bright, windy weather.

Given these conditions, shrivelling is likely to be more severe if the paint has been heavily applied.  The formation of a surface ‘skin’ reduces the supply of oxygen to the underlying paint.  If the coating is excessively thick, it may take several days or even weeks, to dry and harden properly.

If the time can be for the coating to dry and harden, it may be rubbed down with fine abrasive paper and recoated. If early reinstatement is necessary, it may be possible to scrape off most of the defective material and remove the residue with a clean cloth and white spirit.  Another coat can then be applied.