"Around 40 per cent of the women with high usage of eye make-up products tend to get affected with oil gland blockages. Parabens and yellow wax used in mascara and eyeliners to stiffen them to make it waterproof are the same chemicals that also clog the oil glands leading to MGD, chalazion, dry eye syndrome and blepharitis," Parul Sony, senior consultant and director of Gurgram's Complete Eye Care.