here is what I do- I put the lashes on with the duo and if the bride is really worried about crying- I go over that with a few dabs of lashtite-it is in a clear glass jar-you MUST be very careful to not get it in the eye-it stings. I just dab it on (use a very small amount-not big drops) with a qtip. Be sure to tell her to use baby oil or waterproof makeup remover when she is ready to take them off-this stuff is STRONG- but I would only recommend it if you are worried they will come off.;)