Waking up to find that the cowlick that used to rule your morning routine has disappeared may be a pleasant but puzzling surprise. When hairlines recede they change the way that your face is framed. Hair loss can be a result of genetics, stress, hormonal changes or illness, and vary from person to person.

Oily hair feels unpleasantly sticky, like it has a greasy film on it. Thick-strand and kinky hair may be capable of bearing up under the weight of excess oil. Hair that is thin and straight, however, is limp and difficult to style when it is oily.

You can achieve naturally thick eyelashes safely and inexpensively without even leaving your house. The ingredients for naturally thick and longer eyelashes are right inside your medicine cabinet -- or at your nearest health food store.

If your blonde or light-colored hair turns green in the pool, don't blame chlorine. Many people think chlorine is at fault when oxidized metal particles, such as copper and iron, are the real culprits. You don't need to suffer from grassy-colored hair for the whole swimming season, though.

Many people turn to home haircuts to save time and money. Hair clippers are fairly easy to use with a little practice. Get the right kind of clippers for the types of styles you want to cut and practice on a few willing friends or family members.

On average, hair grows at a rate of 1/4 to 1/2 inch per month. Several factors can affect the rate of hair growth, including diet and health conditions.

Hair growth occurs in a cyclic pattern. While the pattern of growth for each individual hair is identical to that of all of the surrounding hairs, individual hairs progress through the cycles of growth at different times. At any given time, most hair is actively growing.

Avid swimmers with blond hair may encounter problems. The hard metals and minerals in the water, including copper, iron and manganese, adhere to the hair. The chlorine in the water oxidizes the metals, leaving the hair with a distinct greenish hue, according to Columbia University's Go Ask Alice! column.

Foam rollers -- soft, cushion-like foam and a plastic rod and clip that secure the hair -- are gentler on your hair than many other styling tools. They don't use heat to curl the hair, and the foam is unlikely to snag or damage your hair. They're also more comfortable than hard rollers.

Although flyaway hair looks like a beauty problem at first glance, it's actually a simple science problem -- friction and ionization cause static electricity, which leads to wild individual strands sticking our from your head.

Dry hair occurs when the hair shaft cannot absorb or retain enough moisture, resulting in a brittle, lackluster appearance. Dry hair may result from washing too frequently, using harsh soaps and heated styling tools, or excessive exposure to the elements. In many cases, home remedies can restore moisture to dry hair.

Natural African American hair can be difficult to manage, especially when most hair products are made for Caucasian hair.