What are the disadvantages of interlining?

The Troubles of Interlining: Even Experienced Irons Get a Headache

I. A Harmful Feel

■ Fabric Becomes Stiff and Hard: Adding fusible interlining to the waistband of a silk skirt makes it feel like cardboard and uncomfortable to sit on.
Interlining the collar of a thin cotton shirt causes it to rub against the neck when turning around.
■ Reduced Breathability: Adding sweat-wicking interlining to the armpits of summer clothes makes sweat feel like being wrapped in plastic, and it starts to smell bad after half an hour.
Adding thick interlining to curtains turns them into a sauna when the windows are closed in summer.

II. Time-Consuming and Labor-Inefficient Operation

■ High Ironing Failure Rate: Beginners ironing fusible interlining: if the temperature isn't controlled properly, the interlining adhesive seeps through and leaves oil stains on the fabric.
Adding interlining to a wool coat: if steam is sprayed for even two seconds too long, the wool shrinks to a children's size.
■ Increased Sewing Difficulty: Thick interlining + thick fabric makes the sewing machine unable to sew properly, resulting in crooked stitches like earthworms.
Matching the wrong interlining to elastic fabric results in wrinkled, sauerkraut-like fabric after sewing.

III. The Mystery of Lifespan

■ Stops After a Few Washes
Cheap fused interfacing, after five washes in the washing machine, the edges peel and curl up like scabbed wounds.
The collar of a T-shirt with interfacing shrunk after drying, causing the fabric to ripple.
■ Hidden Costs of Aging
The lining of a ten-year-old suit crumbles, crumbling easily when bending over.
Curtain lining becomes moldy when damp; black spots are revealed when the lining is removed.

IV. Hidden Cost Increases

■ Invisible Money Pit
High-end horsehair interfacing is more expensive than the fabric itself; the lining alone for one suit can buy three ready-made garments.
Miscalculating the size and cutting the lining incorrectly results in half a roll of material being wasted—enough to buy three kilograms of ribs.
■ Repairing is Even More of a Brain Teaser
Removing misaligned fused interfacing: glue residue cannot be removed, rendering the fabric unusable.
Finding missed stitches after sewing the interfacing, requiring unraveling and resewing, leaving needle marks all over the fabric.

V. Special Scenarios Leading to Disasters

■ Delicate Fabric Nemesis
Ironed interfacing ruins silk: The luster is completely dulled, turning it into a dusty mess; expensive fabric becomes a rag.
Lace petals are flattened into flat metal sheets after being interfacing, destroying all romance.
■ Children's Clothing Safety Pitfalls
Stiff interfacing chafs and reddens a baby's neck, causing crying all night with no apparent cause.
Synthetic interfacing releases odors when exposed to sweat; parents expose these unethical practices in online groups.