What is better for your hair silk or satin pillow cases?

Both silk and satin pillowcases are beneficial for hair, but silk is generally considered superior due to its natural fibers, which help reduce friction and prevent hair breakage and frizz. Silk also has moisture-retaining properties, keeping hair hydrated. Satin, typically made from synthetic fibers, can still provide some benefits but may not be as effective as silk in maintaining hair health. Ultimately, the choice may depend on personal preference and budget.