Not all pillowcases treat your hair and skin the same way. Cotton is highly absorbent and creates friction, which can draw moisture away from your face and leave your hair rough and tangled by morning.
Satin, on the other hand, may look similar to silk, but it is not a natural fabric. It is simply a weaving technique, almost always made from cheap synthetic polyester. Because polyester is essentially plastic, it traps heat, causes you to sweat, and completely lacks the breathability and natural protein structure of real silk.
Mulberry silk is entirely different. Its perfectly smooth surface allows your hair to glide easily, which helps reduce tugging, frizz, and unnecessary stress while you sleep. Because it is a natural protein fiber, pure silk is also naturally antibacterial and hypoallergenic, providing a cleaner, more hygienic resting surface that actively resists bacteria and helps prevent skin breakouts. It feels cooler, softer, and naturally regulates your temperature - allowing your skin to breathe in the summer and keeping you comfortable in the winter - making it a simple but meaningful upgrade to your nightly routine.