If only 11% of make-up is tested, what makes people want to wear it? The answer is very simple; people have grown up in a community where it’s taught that you’re only pretty if you wear makeup. Mascara has been used by different cultures for millennia. In Ancient Egypt, sticks were usually made of ivory, bone, wood, hematite, glass, or bronze, and were not only used to mix the concoction, but to apply it, too. Even Kama Sutra, the ancient Indian treatise of love and sexual pleasure, had a recipe similar to the mascara 19th century women used. Mascara has been made if malachite, galena, copper, iron, manganese, and lead. Frankincense, resin, and mastic are said to be the precursor to waterproof mascara. Maybelline cake mascara was made in 1917 and was the first mascara for every day use. Today’s mascara is made of kohl and was originally referred to as mascaro, the hair dye. It was also made popular after World War I, only for eyelashes, of course. This project is very important because it shows exactly what is done to eyes without anyone knowing.
Mascara is the independent variable in this project. Mascara is considered basic to any kind of cosmetic application. Women tend to overdo mascara mostly because the makeup industry says long, think lashes are most desired. There are two main types of mascara: waterproof and water-soluble, able to be dissolved in water. Black mascara is the most popular color, but some use brown if their hair color is a light color (i.e. blondes). There is also clear mascara, for those who find that all of the colors of mascara are too dark for the complexion. Clear mascara isn’t a waste of money either; it lifts your lashes and separates them. Some women acquire recurring conjunctivitis, an infection of the outer part of the eyeball, due to contagion of their eye cosmetic and applicators. Mascara is to be thrown out every three-six months. Adding water to mascara causes the preservatives to become reduced and lessen the protection against bacteria. Sharing mascara spreads germs and is the most common way to spread conjunctivitis. Using saliva to moisten mascara can get the bacteria from your mouth in to you mascara tube. Some mascara includes an ingredient that breaks down to produce formaldehyde. Formaldehyde averts bacteria. The general purpose of mascara is to accentuate, thickened, lengthen, and distinguish. Mascara is made of water, wax thickeners, film-formers, and preservatives. Some brushes have rayon and nylon to lengthen eyelashes. Mascara brushes can be straight or curved to curl lashes.
Bacteria are the dependent variable in this project. Bacteria are microscopic organisms whose single cells don’t have a membrane-bounded nucleus or other membrane-bounded organelles like mitochondria. Bacteria belong to a group all by themselves. Bacteria are in the kingdom Monera. Bacteria can cause many different diseases: tetanus, pneumonia, syphilis, and tuberculosis. They are commonly found in large groups since they multiply so quickly. A bacterium grows slightly in size or length. Then a cell wall grows through the center if the bacterium creating to cell. One of the reasons the world isn’t covered with bacteria is that conditions are barely ever optimum. Bacteria are not always bad. There are bacteria in our stomachs that help digest food. Some bacteria can do photosynthesis. They have chloroplasts but chlorophyll and other needed chemicals are added in to their cell membranes, they are called Cyanobacteria. Some kinds of bacteria need and do best with oxygen; others are killed by it. Heterotrophic bacteria absorb dead organic material. There many different types of bacteria here are just a few: bacilli, rod-shaped bacteria, cocci, round shaped bacteria, spirilli, spiral shaped bacteria, aerobic, bacteria that needs oxygen, anaerobic, needs no oxygen. Bacteria have recently been found in the ocean. They live so deep that they live in total darkness near thermal vents.
Bacteria are everywhere, some good, and some bad. Bacteria are living things, and living things grow. They can multiply in just twenty minutes, each bacterium creating another. How do people know makeup is safe? They don’t. It’s safe until it is used. This is why this project is important.
2006-12-05
14:44:41
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4 answers
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asked by
animallover435
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Science & Mathematics
➔ Biology