Have you ever sneezed after applying mascara and then you have it all under your lower lash line? Have you ever bumped your cheek with your mascara applicator and had a black smudge on your cheek? Normally, I would take a cotton swab and put some make-up remover on it for the mishap. It can work great, but it will also remove the make-up underneath the mascara such as the foundation and the concealer.
Someone suggested to me the other day to let the mascara mishap dry completely and then use a longer bristled eye shadow brush to sweep away the mistake. Isn't that cool?