Although some people may prefer the loose and casual appearance of soft and comfortable blue jeans, having crisply starched blue jeans is an option for jeans if you want to dress them up slightly. If you prefer the crisp feel and look of starched blue jeans, you can easily accomplish this by adding liquid starch to your washing machine as you launder your blue jeans or by using a spray starch as you iron your jeans.
Starch Jeans in the Washing Machine
Turn your jeans inside out and place them into the washing machine. Set the washing machine to cool or warm water.
Add a small amount of laundry detergent and pour an appropriate amount of liquid starch into the fabric softener dispenser of your machine (consult the liquid starch instructions for the proper amount of product to use for the size of your wash load).
Start the washing machine and allow it to progress through the entire cycle. Remove the jeans, turn them right-side out and dry them either in the dryer or on a clothesline.
Starch Jeans with an Iron
Fill the spray bottle halfway with liquid starch and then fill it to the top with cool water. Close the spray bottle and shake the contents well to mix them.
Heat the iron to a medium-high heat setting.
Lay the jeans out onto the ironing board and arrange them neatly before ironing them. If you desire a crease going down the center front of the legs, create this by arranging the jeans in this fashion prior to ironing.
Hold the spray bottle between 8 and 10 inches away from the jeans and spray the starch evenly over the denim fabric to lightly dampen the denim. Work in small 12-inch sections for best results, spraying and then ironing immediately.
Iron the fabric where you sprayed the starch to make the denim crisp.
Continue spraying the jeans and ironing them until you finish starching the jeans completely.
Hang the jeans on a hanger or wear them immediately.