Nope, not from bat guano. Clicketyclack gave you the true poop -- I mean, scoop. However, I can tell you how that idea got started: It's because of the "guanine" ingredient, that Clicketyclack listed. Guanine (C5H5N5O) happens to be one of the 5 building-block molecules for both RNA and DNA. It was first isolated in 1844, from seabird poop which is also called "guano" (!), and so it was named guanine. Yes, guanine is also in bat guano, and anything else that has DNA/RNA. However, the stuff used in cosmetics is actually crystalline guanine and they extract it easily and cheaply from _fish scales_. It's the stuff that makes "pearly" or "iridescent" finishes in cosmetics. -- However, do you wanna get grossed out for real? There's a facial treatment on the market that comes from Japan and is popular because they say it gives the skin a "pearly glow". It's called Uguisu No Fun by the Natural Japanese Beauty company. THAT stuff is actually made from powdered nightingale poop!! I swear on my cat's toes! -- Some people will buy anything!
lol No, not bad guano although a lot of people thought so for a long time. Most mascaras contain the same ingrediants. They are a carbon black pigment, guanine, beeswax and mineral oil, linseed oil, castor oil or lanolin.
Also interesting to note, the first mascara of modern times was just a little bit of black coal dust mixed into some Vaseline by a girl named Maybel. It inspired the real product manufactured by her brother, who named it after her. Maybel + Vaseline = Maybelline. :)
All mascaras are made out of pigmentation, oils, and waxes. Different mineral oils, linseed oil, castor oil, eucalyptus oil, lanolin, and oil of turpentine can be found most frequently among the many formulas. Waxes usually found in mascara are paraffin wax, carnauba wax, and beeswax.
Originally mascara was made from soot or charcoal. Through the years mascara has been made from various materials, but within the U.S., only natural and inorganic pigments are allowed. The FDA no longer allows the use of tar or coal since it is hazardous.