For the most part, you already know that false eyelashes can disrupt eyelash growth.  At the same time, you may not be aware that certain hygienic practices can also cause problems.  Among other things, when you wash off eyeshadow, the cleansers and residue may collect around your eyelashes.  Irregardless of how carefully you try to remove this type of debris, it may block hair from emerging, as well as cause irritation.  As may be expected, this can also create micro dandruff, and many other problems.  In these cases, it may be of some help to consult with an eye doctor to find out if the skin around your eyelashes is healthy.