nail polish photo. Text: Beauty School - 5-Free Nail Polish - Five-Free nail polish have formulas that don't contain five chemicals: formaldehyde, dibutyl phthalate (DBP), toluene, formaldehyde resin, and camphor. These ingredients could potentially cause a number of health concerns in high doses. While the occasional nail polish user need not worry, professional manicurists have a much higher risk of exposure by inhaling the chemical vapors or absorbing them through the skin.