Under-eye circles are common as you age, since skin elasticity weakens and it loses collagen. However, according to the Mayo Clinic, dark circles under the eyes can occur at any age, in both women and men.

In contemporary terms, Castile refers to any vegetable oil-based soap, although you should to check labels carefully to ensure there are no artificial or petroleum-based additives. The original Castile soap was an olive-oil based soap made in the Castile region of Spain.

Eyes normally move only in response to stimuli or direct commands from the brain. If severe, rapid involuntary eye movements may interfere with vision. Rapid eye movement, or REM, can occur as a natural process or as a symptom of disease. It may indicate a serious brain disorder or occur naturally in sleep.

Milia are small white bumps, also called cysts, that can appear in various areas of the face, including under the eyes. MedlinePlus explains that such bumps occur when dead skin becomes trapped in small pockets at the surface of the skin. Infants are especially susceptible to milia in the months following birth.

Rayon is a man-made “regenerated cellulose” fiber. Even if you’re not sure what “regenerated cellulose” means, there is one thing you need to know about this manufactured fiber: It can shrink when exposed to heat.

Castile soap is a natural liquid or hard soap made from vegetable oils. The first Castile soaps were made with the local olive oil and contained no tallow, or rendered animal fats, like most contemporary soaps. Today, Castile soap appears in many stores, often scented with essential oils, as a multipurpose cleanser.

Black soap looks, feels and smells different from the soaps we're used to in the United States. These soaps tend to be softer in texture and have an earthy smell. Their dark color results from being made with ashes from plants, explains Africa Imports.

Puffy eyes after eating fish is a concerning symptom that will need to be evaluated by your doctor immediately. The Asthma and Allergy Foundation states that fish are the most common causes of a food allergy that can lead to anaphylactic reactions.

Calcium deposits on the eye may result from a variety of different conditions. Depending on their location, they may affect the function of the eye. If they are located under the eye and are asymptomatic, home remedies are available to remove them.

Nightclubs are a go-to weekend destination for many young professionals and with the plentiful drinks and dancing comes a specific type of attire. With competition steadily increasing, clubs are in constant search of the hippest, trendiest and most fashionable of customers, so you'll want to dress to impress.

The oil of an avocado penetrates the skin but is also thick enough to serve as a protective barrier. The oil has both beauty and health applications.

Down is soft, fluffy material made from duck or goose feathers. It’s commonly used in jackets because of its ability to maintain heat and keep the body warm. If you notice your down jacket smells funny, it may be that the down got wet and has created a musty smell.