is hydrophobic in a controlled way. It does not absorb your skin’s natural oils (sebum) nor your hair’s moisture balance. Instead, it allows your expensive night creams and hair serums to stay on your skin and strands, rather than being sucked into your pillowcase. Synthetics like polyester satin repel water entirely but trap sweat, leading to a greasy, uncomfortable film.
If you take a tiny thread and burn it, real silk smells like burning hair and turns to ash. Synthetic satin smells like burning plastic and melts into a hard bead.
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