Why do jeans get strange waves after washing?
These odd, wavy creases or puckers—especially on the inner thighs, knees, or seams of your jeans—are not a defect. They often result from the manufacturing, washing, and drying of denim. The good news? With proper care, they can be minimized (and often even eliminated).
🧵 What causes the waves?
1. Uneven shrinkage (The main cause)
Denim is woven from cotton yarns that are stretched during manufacturing.
When washed, especially in hot water, the fibers relax and shrink—but not always evenly.
Areas under tension (such as crotch seams, thighs, or areas with double stitching) shrink at different rates, leading to creases or waves.
2. Movement During the Wash Cycle
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