How do I remove cooking oil stain on stretch denim jeans?

Hello Debbie! It is possible that the cooking oil stain is permanent because you have already washed and dried your jeans. There are a few things you might try. My daughter once spilled an entire deep fryer of cooking oil on my brand new carpet. A friend who owns a carpet cleaning business suggested soaking the carpet with rubbing alcohol to try and get some of the oil stain out. It did work. You might try some rubbing alcohol first and then rinsing well. Let your jeans air dry to see if the spot has come out. Here are some other ideas. https://www.wikihow.com/Get-a-Cooking-Oil-Stain-out-of-Clothing

Read the garment or item's washing-instruction label before proceeding. If the item is dry-clean-only or has limitations, such as "gentle wash cycle" or "hand wash," do not proceed.

Wet the stain with warm tap water.

Squirt a few drops of dish soap on the grease mark. Manufacturers formulate dish soap to break down grease.

Grasp the fabric on both sides of the stain and rub the material together to work the soap into lather in the greasy area. Wear rubber gloves if you have sensitive skin.

Set the item aside for an hour or so.

Wipe most of the soap off the fabric with a paper towel.

Launder the item in a cool or warm-water wash cycle, referring to the care label. Add your usual laundry detergent to the washing machine.

Air-dry the stain-treated item. Do not put it in the dryer because the heat can further set a stubborn stain.

Inspect the dry item for full stain removal. If some of the greasy splotch remains, repeat the stain-removal process.Things You Will Need

• Dish soap
• Rubber gloves (optional)
• Paper towel
• Laundry detergent

Take more fragile types of clothing or linens to a dry cleaner for stain removal, or attempt to remove the stain with a gentler effort, such as using a stain-removing product intended for the type of stain and delicate material.

I absolutely swear by this degreaser product! Many times I have washed and dried something only to find a grease stain I forgot to pre-treat and it works great still! I just put a small amount on the grease stain, rub it in, let it sit for a bit and then wash and dry like normal.

put some Dawn Ultra dish soap on spots rub it in with finger let sit over night then rinse area with cold water repeat if necessary should work first time around rinse out all dish soap then laundry time( dish soap will make excessive bubbles in wash machine so rinse well before you put pants in washer).

Try lestoil. Works great. Pour it on the stain, run it in with fingers and let it sit for as long as you can but don’t let it dry. Launder ... has an slight odor but run it through wash again to rid of any smell. Find it in grocery store. Been using it for 50 years

Thank you for your response. I will look up info on Lestoil. Ive never heard of it before.

I sprayed 409 all purpose cleaner on it, which was a large area, rubbed it in good, let it sit for 1 hour and washed. Woo Hoo! It came out! Thank you for all the advice! Good 'ol 409 for degreasing!