1. Pillow core is easy to be particularly dirty after three years.
Our head is in contact with the pillow for a long time, and the substances in the head can easily penetrate into the pillowcase, reach the pillow core directly, and then stay on the pillow core for a long time. People like me drool at night, and all the saliva flows into the pillow core. After three years of fermentation, my pillow must be particularly dirty. In such an environment, there will be many kinds of molds and mites in the pillow core. According to a data on the Internet, 50% of pillow cores that have not been washed for two years are composed of mold and mites. So how terrible it is, then the pillow core that has not been washed for three years must be dirtier.
2. The pillow core is also close to the human head.
After we washed the pillowcases, the pillows really looked much cleaner. But in fact, there is only one pillowcase between the pillow core and the human head. If the pillow core is dirty, it will easily affect people's heads. When our pillow core is full of mold and mites, it will naturally affect our face, prone to acne, and there will be some other shallow effects. A pillow core that has not been cleaned for three years has experienced the fermentation of our head oil and various saliva, and there are countless bacteria in it. These bacteria will have an indescribable effect on our bodies.
When we sleep at night, hair oil, saliva and other substances will slowly penetrate into the pillow core. If the pillow core is not cleaned for a long time, there will inevitably be many bacteria. People's face will easily touch the pillow core, so it will definitely affect people's health.