Patented formula works on all surfaces to remove most ink, including ballpoint, permanent marker, highlighter and stamp pad ink. Also removes nail polish and correction fluid. 100% biodegradable, water-based technology that is EPA VOC Compliant in 50 states and is safe to be shipped in every state, including California. Patent technology is 100% biodegradable before and after usage. Received an “A“ rating by Consumer Testing Labs and is Green Cross Certified by Scientific Certification Systems. 6 bottles per case.