Everyone knows that heat can create curls or straight hair, but proper cooling techniques can make all the difference in how long your style lasts. Allowing your hair to cool in the shape of the curl your iron just created, secures the curl ensuring a longer lasting hold. Allowing the hydrogen molecules we’ve been talking about to fully set in their new shape before releasing is important to lengthening the life of a style. Let that curl sit in it’s coiled position until it cools. For extreme hold make sure you spray with hair-spray during the cooling process.