Why do some fabrics become more comfortable the more they are washed (such as bedsheets) and some fabrics get less comfortable (such as fleece)?
In: Physics
In things like bed sheets where the material is thin and flat, once they weave it, they add a starch-like liquid called sizing. This helps keep it’s shape when you cut pattern pieces out. (Fabric stretches on the diagonal). Washing will remove some of the sizing. So after a few washes the fabric is more pliable.
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