Xylenes can affect you when breathed in and by passing through your skin. Xylenes may damage the developing fetus. They can irritate the eyes, nose and throat.
High levels can cause dizziness, passing out and death.
Repeated exposure may damage bone marrow causing low blood cell count. They may also damage the eyes, and cause stomach problems. Xylenes may cause problems with memory and concentration. They are used as solvents and in making drugs, dyes, insecticides and gasoline. Definitions are attached.