Detailed answer

Blackheads are caused by excess oil, dead skin cells, and dirt clogging the pores. Pillowcases can harbor these impurities, which can transfer onto the skin and potentially contribute to the formation of blackheads. By changing pillowcases regularly, you can reduce the accumulation of these impurities and help prevent blackheads. However, it is important to note that changing pillowcases alone may not completely prevent blackheads, as they can also be caused by hormonal factors and inadequate skincare routines. Therefore, maintaining a consistent skincare routine, including cleansing the face thoroughly, exfoliating regularly, and using non-comedogenic products, is also crucial in preventing blackheads.