 Lip plumper is a cosmetics product used to make lips appear fuller. In appearance, it ranges from translucent to opaque and tinted. A lip plumper can be formulated to be worn alone as a lip gloss. Sheerer versions can be applied under lipstick.
Lip plumpers are used by those with thinner lips when full, "pouty" lips are desired. These products typically work by irritating the thin, delicate skin of the lips with ingredients like menthol or camphor. This makes the lips swell slightly, which may also diminish the appearance of fine lines in that area. Other perceived benefits include stimulating collagen production and moisturizing. A lip plumper's effects are temporary, so it must be reapplied throughout the day to maintain the results.
Lip Plumper Application
The manner in which a lip plumper is applied depends on the cosmetic's formulation and container. When the product comes in a tube, a wand applicator is usually attached to the inside of the cap. A wand applicator consists of a very small, fuzzy piece of foam on a long stem. Semi-solid plumpers, which are applied with fingers or a lipstick brush, may come in small pots. A container with a roller ball permits direct application.
In optics, transparency is the material property of allowing light to pass through. In mineralogy, another term for this property is diaphaneity. The opposite property is opacity. Transparent materials are clear: they can be seen through. Translucent materials allow light to pass through them only diffusely: they cannot be seen through; contrary to popular belief, translucency does not include see-through colored objects such as (for instance) emerald in its cut state (which is transparent) but does include things such as frosted glass which allow light to come through but no images.
Transparency
Though transparency usually refers to visible light in common usage, it may correctly be used to refer to any type of radiation. For example, flesh is transparent to X-rays, while bone is not, making X-ray imaging useful for medicine.
Examples of transparent materials are air and some other gases, liquid such as water, most glasses, and plastics such as Perspex. Where the degree of transparency varies according to the wavelength of the light, the image seen through the material is tinted. This may be due to certain metallic oxide molecules in glass, or larger colored particles, as in a thin smoke. If many such particles are present the material may become opaque, as in thick smoke.
From electrodynamics it results that only a vacuum is really transparent in the strict meaning, any matter has a certain absorption for electromagnetic waves. There are transparent glass walls that can be made opaque by the application of an electric charge, a technology known as electrochromics. Certain crystals are transparent because there are straight lines through the crystal structure. Light passes unobstructed along these lines.
There is a complicated theory "predicting" (calculating) absorption and its spectral dependence of different materials. See: absorption (optics) - absorption of photons by a material and absorption spectroscopy.
Cosmetics
Cosmetics are substances used to enhance or protect the appearance or odor of the human body. Cosmetics include skin-care creams, lotions, powders, perfumes, lipsticks, fingernail and toenail polishes, eye and facial makeup, permanent waves, colored contact lenses, hair colors, hair sprays and gels, deodorants, baby products, bath oils, bubble baths, bath salts, butters and many other types of products. Their use is widespread, especially among women in Western countries. A subset of cosmetics is called "make-up," which refers primarily to colored products intended to alter the user's appearance. Many manufacturers distinguish between decorative cosmetics and care cosmetics.
The manufacture of cosmetics is currently dominated by a small number of multinational corporations that originated in the early 20th century, but the distribution and sale of cosmetics is spread among a wide range of different businesses. The U.S. FDA which regulates cosmetics in the United States defines cosmetics as: "intended to be applied to the human body for cleansing, beautifying, promoting attractiveness, or altering the appearance without affecting the body's structure or functions." This broad definition includes, as well, any material intended for use as a component of a cosmetic product. The FDA specifically excludes soap from this category.
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