You can avoid ironing denim and similar fabrics because they typically are made from cotton, which responds well to heat. In order to remove the wrinkles, use a dryer, hair dryer or a clothing steamer. If you don't have a steamer, you can use the shower instead. It's best if you take a shower yourself while de-wrinkling your denim -- you'll save a few pennies on your water bill that way. If your denim contains spandex, make sure to read the manufacturer's label; spandex can lose its elasticity if not cared for properly.
Hold a hand towel or sock under running water for 30 seconds and wring it out to dampness.
Put the towel or sock and the denim into a clothes dryer. Turn it to a medium setting. A hot dryer will remove more wrinkles, but can lead clothing to shrink a bit.
Run the dryer for 10 to 15 minutes. Hang it up to keep it wrinkle-free.
Hang the denim on a clothes hanger and hang it on a rod that allows access to both sides.
Turn a hair dryer onto a high setting and blow it on the fabric, moving from top to bottom.
Blow for a few minutes on each side until the wrinkles smooth out. This method works best for denim with just a few small wrinkles.
Put the denim on a clothes hanger and hang it up in your bathroom. Try to find a spot where the fabric is surrounded by empty space and not pressed against a wall or mirror.
Turn the water temperature in your shower stall to a warm-to-hot setting. Close the curtain or shower stall.
Close the door as you shower, or leave the room with the door closed. The bathroom will fill with steam and the wrinkles will fall out in 10 to 15 minutes.
Fill the clothing steamer tank with water or distilled water according to manufacturer's directions.
Hang the denim on the steamer rod or a clothes hanger. If using a clothes hanger, hang it on a rod that gives you access to both sides.
Follow manufacturer's directions for heat settings and steaming time. Move the steamer across the fabric to remove the wrinkles.