How to Straighten Your Hair. Three Methods Straightening Iron Using a Hairdryer Keeping Hair Straight Community Q A Curls and waves are fun and exciting, but can be hard to keep neat at times. So if you are in the mood to switch up your look, try straightening your hair!.Now you don’t have to choose between a million brands to give you two different effects. Mirabella’s got you covered when you want a defined line, a cat eye, or a smudgy smokey eye.. Step Insert the curling iron half way from the top of your head. Let go of clamp. Gently pull hair your hair through the curling iron about of an inch, and then turn the curling iron back up towards the top of your head..