Gentle Cycle/Hand Wash
Stretch denim tends to be more prone to damage, so a gentle cycle is a lot kinder. If you’re working with a pair of jeans you really like, try the hand wash option — it’s even better.
Don’t Overload the Machine
Your jeans need breathing room. If they are packed in tightly with too many other clothes, they’re more likely to emerge looking warped.
Reshape Jeans Before Drying
If your jeans already appear wrinkly fresh out of the wash, don’t just throw them in the dryer. First lay them flat and smooth out any bunching by hand. If you air-dry, hang them by the waistband so they don’t get wonky creases.
Don’t Overdo the Fabric Softener
Fabric softener can make clothes feel good, but it applies a coating to Lycra fibers that makes them lose their stretch as they age. Using too much will actually do more harm than good.

How to Restore Jeans That Already Rippled or Wrinkled After Washing
So what if the harm is already done? Don’t panic — there are steps you can take to smooth things out.
Steam the Fabric
Giving warped denim a once-over with a clothes steamer works wonders. If you don’t, hanging them in a steamy bathroom for a few minutes can loosen the fibers.
Use an Iron with a Damp Cloth
Dampen a cloth and place it over the rippled areas, pressing with an iron on a low setting. It helps loosen the Lycra and the iron smooths out any wrinkles.
Stretch the Fabric by Hand
Sometimes it takes a bit of pulling. Lay the jeans out flat and lightly pull on the puckered spots to spring them back into shape. This is most effective while they are still wet.
Rewash Cold Water Gently Dry
If all else fails, washing them again — correctly this time — can sometimes help reset the fabric before the damage becomes permanent.

Jeans warping and rippling after washing isn’t just bad luck. This is generally a sign that the Lycra fibers have been compromised through heat, aggressive washing or improper drying. And once that range is lost, it doesn’t come back.
But the good news? Some simple tweaks — washing in cold water, avoiding the dryer, reshaping them while they dry — can help keep your jeans looking good for a whole lot longer.
And if you have been washing your jeans every time you put them on, you may want to consider changing that wash-rinse-repeat cycle. Well, it turns out that most of us are washing our jeans too much, which could lead to an even shorter lifespan.