The pillow is one of the items used daily at home, but it is often overlooked when it comes to changing or cleaning it. Many people keep the same pillow for years and do not wash it regularly. This can directly affect hygiene and health. According to expert advice, pillows that cannot be washed should be replaced at least once a year. Over time, they accumulate dust, bacteria, and mites, which are not visible to the naked eye. Sleeping on an old pillow can lead to various problems, such as skin irritation, acne, allergies, or even worsening of asthma. Therefore, it is recommended to wash pillows regularly or replace them in a timely manner to maintain a clean and safe sleeping environment.