Protect yourself from long-term and large-scale contact, but there is no need to protect yourself from occasional contact every day. Just wash your hands after you finish. Colored paper is added with chemicals, and it is generally not recommended to package food and medicine. It is best not to use colored paper to package medicines. Colorful paper towels show that paper towels have added pigments, and inferior pigments enter the respiratory tract through the nose and mouth, causing great harm. If too much fluorescent agent is added to the white paper towel, the fluorescent agent will be absorbed by the human body and is not easy to decompose. Long-term use will produce toxins to the human body. Colored paper is generally cardboard, used for folding, tying flowers or colored crepe paper, also called crepe paper. It refers to a kind of processing paper with wrinkles on the paper surface, which is divided into three categories: household corrugated paper, packaging paper and decorative corrugated paper.