An eyelash or simply lash is one of the hairs that grows at the edge of the eyelids. Eyelashes protect the eye from debris and perform some of the same functions as whiskers do on a cat or a mouse in the sense that they are sensitive to being touched, thus providing a warning that an object (such as an insects) is near the eye (which then closes reflexively).
Long eyelashes are considered a sign of beauty in many cultures. Accordingly, some women seek to enhance their eyelash length artificially, using eyelash extension. On the other hand, Hadza women are known to trim their own eyelashes.
Kohl, a black putty (usually antimony sulfide or lead sulfide), has been worn as far back as the Brown Age to darken the edge of the eyelid (just at the bottom of the eyelashes). In Ancient Egypt, it was used as well by the wealthy and the royal to beautify their eyes. Modern eye makeup includes mascara, eyeliner, eye putty, and eye shadow
to emphasize the eyes. The twentieth century saw the beginning of
convincing false eyelashes, popular in the 1960s. There are also
different tools that can be used on the lashes such as eyelash curler or mascara shield (also named mascara guard or eye makeup helper).
Permanent eyelash tints and eyelash extensions have also become
popular procedures, even in fairly basic salons. It is also possible to
get eyelash transplants, which are similar in nature to hair transplantation
often done on the head. Since the hair is transplanted from the hair on
the head, the new eyelashes will continue to grow like head hair and
will need to be trimmed regularly.
Latisse was introduced in the first quarter of 2009 by Allergan as the first drug to receive FDA approval for eyelash growth. Latisse is a solution of bimatoprost, the active component of the glaucoma
medication Lumigan. According to Allergan, noticeable eyelash growth
occurs within 16 weeks. Growth is reported to occur primarily on the
upper eyelashes. In addition, the past decade has seen the rapid
increase in the development of eyelash conditioners. These conditioners
are designed to increase the health and length of lashes. Many utilize
seed extract, minerals, and other chemicals to achieve these results.
Cosmetic companies have recently relied on scientific research of prostaglandins and the Wnt/b-catenin
signaling pathways to develop eyelash products. Although bimatoprost is
effective in promoting increased growth of healthy eyelashes and
adnexal hairs, its effectiveness in patients with eyelash alopecia
areata is debatable.
The eyebrow is an area of thick, delicate hairs above the eye that follows the shape of the lower margin of the brow ridges of some mammals.
Their main function is to prevent sweat, water, and other debris from
falling down into the eye socket, but they are also important to human communication and facial expression. It is common for people to modify their eyebrows by means of hair removal and makeup.
Cosmetic methods have been developed to alter the look of one's
eyebrows, whether the goal is to add or remove hair, change the color,
or change the position of the eyebrow.
Eyebrow brushes, shaders, and pencils are often used to define
the eyebrow or make it appear fuller. These can create an outline for
the brows or mimic hairs where there are sparse areas. Brow gels are
also used in creating a thicker brow; they allow for the hairs to be
more textured, which gives the appearance of thicker, fuller brows.
Lastly, brow powders or even eyeshadows are used for those who want a
fuller and more natural look, by placing the brow powder or eyeshadow
(closest to the natural hair colour) in areas where there is less hair.
A fairly recent trend in eyebrow modification is in eyebrow
tinting: permanent dye, similar to hair colour, is used on the eyebrows,
often to darken them.
Several options exist for removing hair to achieve a thinner or smaller eyebrow, or to "correct" a unibrow, including manual and electronic tweezing, waxing, and threading. The most common method is to use tweezers to thin out and shape the eyebrow. Waxing is becoming more popular. Lastly, there is threading
eyebrows, where a cotton thread is rolled over hair to pull it out.
Small scissors are sometimes used to trim the eyebrows, either with
another method of hair removal
or alone. All of these methods can be painful for some seconds or
minutes due to the sensitivity of the area around the eye but, often,
this pain decreases over time as the individual becomes used to it. In
time, hair that has been plucked will stop growing back. Some people wax
or shave off their eyebrows and leave them bare, stencil or draw them
in with eye liner, or tatto them on. In Western societies, it has become more common for men to pluck part of their eyebrows.
To create a fuller look, eyebrows can be cloned in an eyebrow transplant.
Individual strands of the eyebrow are created to mimic a
natural-looking eyebrow of the desired shape. The process of eyebrow
transplant is quite similar to the process of hair transplant. In this
process as well, follicles from an active area are transferred to the
area where there are no hairs. Follicles are mostly taken from the back
of the head because it is the best harvesting site when it comes to
hairs. The follicles are then injected into the skin.
The healing process after an eyebrow transplant is similar to the
process of tattoo. In this process, patients may experience light
bruising and crusting of the skin. People who have genetically thin
eyebrows or who have over-tweezed are considered ideal for the
transplant.
An eyebrow lift is a cosmetic surgery
to raise the eyebrow, usually to create a more feminine or youthful
appearance. It is not a new phenomenon, with the earliest description of
brow lifting published in medical literature in 1919 by French surgeon
Dr Raymond Passot. Brows can be affected during a face lift or an eye lift. In the seventies, doctors started injecting patients' eyebrows with botox or similar toxins to temporarily paralyse the muscles to raise the eyebrow.
From the 8th century, many Japanese noblewomen practiced hikimayu,
shaving or plucking the eyebrow hair and painting smudge-like ones
higher on the forehead. Shaving lines in eyebrows is another cosmetic
alteration, more common among younger people in the 1990s and 2000s.
A new trend is eyebrow tattoos. This is seen as a way to achieve
and maintain an eyebrow shape, achieved by using a coil machine, rotary
machine and linear machine. This process, also called cosmetic
tattooing, microblading,
or blade & shade brows, involves an eyebrow artist making small,
precise cuts that mimic the look of hair. Several celebrities have
undergone the procedure, including Lorde, Lena Dunham, Adele, and Bella Thorne.
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