Eyebrows are tricky creatures. Eyebrow is one of the most important parts to beauty. Eyebrow is an area of coarse skin hairs above the eye that follows the shape of the brow ridges. Eyebrows also have an important facilitative function in communication, strengthening expressions like surprise or anger. Eyebrows also prevent debris such as dandruff and other small objects from falling into the eyes, as well as providing a more sensitive sense for detecting objects being near the eye, like small insects. The main function of the eyebrows is to prevent moisture, mostly salty sweat and rain, from flowing into the eye, an organ critical to sight. The typical curved shape of the eyebrow (with a slant on the side) and the direction in which eyebrow hairs are pointed, make sure that moisture has a tendency to flow sideways around the eyes, along the side of the head and along the nose. The slightly protruding brow ridges of modern humans could also still play a supporting role in this process. Together with the eyebrows, the brow ridges also shade the eyes from sunlight. It is common for people to pluck their eyebrows to maintain a clean and fashionable appearance with the use of tweezers and waxing. Both of these methods can be painful due to the sensitivity of the area around the eye but often this pain decreases over time as the individual becomes used to the sensation.

Some people claim that after they've been plucking/waxing their eyebrows for a few months, they become totally immune to the pain. Eyebrow threading is an ancient method of hair removal that is still used in parts of the Middle and Far East. Thin, twisted cotton threads are rolled over untidy hairlines, mustaches and so on, plucking the offending hair. Due to growing popularity in Western countries, threading is now found being performed in beauty salons. Like other methods of hair removal such as plucking or waxing, threading can result in skin irritation and ingrown hairs. Trichotillomania (TTM), or "trich" as it is commonly known, is an impulse control disorder characterized by the repeated urge to pull out scalp hair, eyelashes, beard hair, nose hair, pubic hair, eyebrows or other body hair. Trichotillomania is classified in the DSM-IV as an impulse control disorder that is not elsewhere classified under another axis or disorder. It is classified in this manner to control diagnoses of TTM. It is an Axis I disorder. Unibrow or monobrow presence of abundant hair between the eyebrows, so that they seem to converge to form one long eyebrow.

Steps of Perfect Eyebrow Shape

1.The perfect eyebrow starts above the inside corner of your eye (over the tear duct), and ends at the outside corner, above your eyelashes.

2.Trim your eyebrows. This will make a big difference in helping you look younger. Once eyebrows reach a certain length they start losing pigments at the ends.

3.Take an eyeliner pencil and place it vertically against your nose. It should run from the side of the nose, mid-mouth, and by the tear duct of the eye. This is wear your eyebrow should start; any hair that is visible beyond the pencil should be tweezed.

4.Next place the pencil diagonally where it should hit the middle of the mouth, nostril, and outside the iris of the eye. This is wear your arch is. Tweeze a gradually line from the arch to the start of the eyebrow.

5.Determine the end of the eyebrow, place the pencil diagonally across to his the opposite corners of the mouth, nostril, and outside corner of the eye. Any hair that goes past should be tweezed.

6.Place your pencil horizontal from the start of the eyebrow to the end of the eyebrow. The pencil should create a perfect straight line.

8.The biggest mistake people make is to tweeze too much. Avoid overplucking as it can take months for brows to grow back. Here's a simple trick to remember:

9.Brow shade should be about two shades lighter than hair color for olive or dark skinned women and two shades darker than hair color blondes or women with grey hair.