1. The feet sweat a lot: the feet are the places where the human body sweats a lot, so the slouch socks products will often be soaked in sweat, and the inorganic salts in the sweat will absorb water, which aggravates the slouch socks products. The adhesion prevents the fine fibers on the slouch socks products from being fully opened, so the slouch socks products become wet and hard.

2. Many times of washing: After repeated washing, the fibers of slouch socks products will lose their original shape under the action of external force, and the fibers that maintain their softness and bulkiness will break and fall off.

3. Hard water is used for washing slouch socks products: the tap water we use every day is hard water, which contains a lot of minerals, such as magnesium ions and calcium ions. Washing slouch socks products with hard water, that is, cold water, will make these minerals penetrate. Into the fibers of slouch socks products, over time, slouch socks products will become hard and no longer soft and fluffy.

4. Detergent residues: Traditional laundry detergents and washing powders contain chemical substances, such as fluorescent whitening agents, hydrolase, phosphorus, etc. These chemical substances will remain in the fibers. If they are not cleaned, they will cause slouch socks products. harden.