SAEDNEWS: Drying can leave fabric feeling rough because fibers become less flexible as moisture disappears, while minerals, detergent residue, and friction can add to the effect.
According to SAEDNEWS, the difference between soft, freshly washed fabric and a rougher garment after drying is often related to what happens to the fibers as water evaporates. When fabric is wet, water temporarily separates and lubricates individual fibers, making them feel smoother. As the water disappears, the fibers can come together and become less flexible, particularly when the garment dries without much movement.
Several factors can contribute to that rough texture:
Hard water: Calcium and magnesium minerals can remain on fabric after washing and make fibers feel less soft over time.
Detergent residue: Using more detergent than necessary can leave deposits behind, especially when the rinse cycle does not remove everything.
High heat: Excessive heat can affect some fibers and may contribute to a harsher feel when fabrics are repeatedly dried at high temperatures.
Friction: Tumbling in a dryer or rubbing against other surfaces can change the way fibers sit on the fabric.
Air drying: Clothes dried in a stationary position may become stiff because the fibers remain relatively fixed as the remaining moisture evaporates.
Towels are particularly noticeable because their absorbent loops are designed to hold water. During drying, those loops can become less flexible and stick together temporarily. Mineral or detergent buildup can make this effect stronger, which is why a towel may feel noticeably rougher after drying than it did immediately after washing.

A few simple laundry habits can help reduce stiffness:
Use the recommended amount of detergent rather than adding extra for supposedly cleaner clothes.
Avoid overloading the washing machine, allowing water and detergent to move properly through the fabric.
Choose an appropriate drying temperature for the material.
Shake garments before hanging them to separate fibers and reduce stiffness as they dry.
Pay attention to water hardness if clothes repeatedly develop a stiff or dull texture.
A rougher feel after drying does not necessarily mean the clothing has been damaged. In many cases, it reflects temporary changes in how the fibers are arranged, combined with residue, minerals, heat, or drying conditions.