What Is it? PVP polymer is found in hair products, styling aids and cosmetics such as mascara and eyeliner. Why use this derivative of petroleum? It helps your hair stay in place and keeps your eye makeup from running, but is it worth the risk?

Health Risk: Verdict? Don’t touch that spray bottle. When inhaled, the particles of PVP/VA copolymer can cause damage to your respiratory system – specifically, your lungs. We’d rather breathe easy than subject ourselves to a risky hairdo.

How To Avoid It: As always, keep your eyes peeled for this ingredient, which is sometimes only listed as PVP. We’re going ga-ga over Kjaer Weis’s newest addition to their stellar natural beauty line: mascara! And for a toxin-free updo, turn to the hair care experts at Rahua for toxin-free locks you’ll love.