I heard Glycerine makes you cry and that what they do in the movies. IS this True?
I always thought Glycerine was merely applied on your face to induce a teary eyed look. Due to its Viscosity it slowly rolls down your cheeks.
Some sites say you apply it in the eyes. Does it's Hygroscopic property have anythign to do with inducing crying?
Could someone please help me out with this? And maybe provide some kind of a reference ? hissingnoise - 5-7-2010 at 02:59
Quote:
Due to its Viscosity it slowly rolls down your cheeks.
Spot on!
Sedit - 5-7-2010 at 06:02
It might have to do with the oilyness of it. It you have ever eaten a greasy pizza then touched your eyes you will notice that you can't stop crying
all day. Your eyes are trying to get the oil out and its not successfull at all but with glycerine it would pull it out sooner or later.'
Its just a hunch but it seems like a good reason for its use in the movies since it would trigger the eyes to go into flush out modeKevinism - 5-7-2010 at 20:32
Thanks Guys..
Sedit are you saying that actors place glycerine in their eyes to make them cry? Isn't that unhealthy? I mean it has to be sterile. Maybe you could
find some referenceSedit - 5-7-2010 at 22:07
No im not sayin anything really other then speculation an I stated that in my post.
I just know when an "oily" compound enters the eye it triggers the cry reflex to flush the contaminate out of the eye, Oil from say, chicken wings, or
other things like pizza are a pain in the ass because it wll fuck up your vision all night because it don't dissolve in H2O causing you to tear all
night long and awake with gunk in your eye where as glycerine on the hand being miscible with H2O would be expelled during the flush yet quite
possibly still trigger the reflex to flush it out.
Im no expert at all im just giving explination on why they MAY use it in movies for special effects...
Pehaps hop on the mythbusters forum and ask them. They have plenty of special effect experiance. Jimmymajesty - 6-7-2010 at 08:09
Take glycerine and add it into a flask full of melted KHSO4 drop by drop, you will definitely tear your eyes out, on top of that your eyes will be
similar to that of an albino rabbit.a_bab - 7-7-2010 at 11:11
Acrolein is a different matter, and there are more agents that are far more effective. Unless the movie requires red swollen eyes, I guess it's the
first way of useing that is applied.
