Hair removal, also known as epilation or depilation, is the deliberate removal of body hair or head hair.
Hair typically grows all over the human body and can vary in thickness and length across human populations. Hair can become more visible during and after puberty and men tend to have thicker, more visible body hair than women. Both men and women have visible body hair on the head, eyebrows, eyelashes, armpits, genital area, arms, and legs; men and some women may also have thicker hair growth on their face, abdomen, back, buttocks, anus, areola, chest, nasal and ear. Hair does not generally grow on the lips, the underside of the hands or feet or on certain areas of the genitalia.
Hair removal may be practised for cultural, aesthetic, hygienic, sexual, medical or religious reasons. Forms of hair removal have been practised in almost all human cultures since at least the Neolithic era. The methods used to remove hair have varied in different times and regions.
For centuries, hair removal has long shaped gender roles, served to signify social status and defined notions of femininity and the ideal "body image". In early periods, the condition of being hairless was mostly done as a way to keep the body clean, using flint, seashells, beeswax and various other depilatory utensils and exfoliator substances, some highly questionable and highly caustic. Ancient Rome also associated hair removal with status: a person with smooth skin was associated with purity and superiority. Removing body hair was done by both men and women.
In Ancient Egypt, besides being a fashion statement for affluent Egyptians of all genders, hair removal served as a treatment for louse infestation, which was a prevalent issue in the region. Very often, they would replace the removed head hair with a Nubian wig, which were seen as easier to maintain and also fashionable. In ancient times, one highly abrasive depilatory paste used consisted of an admixture of slaked lime, water, wood-ash and yellow orpiment (arsenic trisulfide); In rural India and Iran, where this mixture is called vajibt, it is still commonly used to remove pubic hair. In other cultures, oil extracted from unripe olives (which had not reached one-third of their natural stage of ripeness) was used to remove body hair.
During the medieval period, Catholic women were expected to let their hair grow long as a display of femininity, whilst keeping the hair concealed by wearing a wimple headdress in public places. The face was the only area where hair growth was considered unsightly; 14th century ladies would pick off hair from their foreheads in order to recede the hairline and give their face a more oval form. From the mid-16th century, it is said when Queen Elizabeth I came to power, she made eyebrow removal fashionable.
By the 18th century, body hair removal was still considered a non-necessity by European and American women. Nevertheless, when the first safety straight razor appeared for men to safely shave their beard and not inadvertently cut their throat, invented by the French master cutler Jean-Jacques Perretin Paris 1760 and author of La pogonotomie, ou L'art d'apprendre à se raser soi-même (Pogonotomy, or The Art of Learning to Shave Oneself), some women allegedly used this safety razor too.
It was not until the late 19th century that women in Europe and America started to make hair removal a component of their personal care regime. According to Professor Rebecca Herzig, the modern-day notion of body hair being unwomanly can be traced back to Charles Darwin's book first published in 1871 "The Descent of Man and Selection in Relation to Sex". Darwin's theory of natural selection associated body hair with "primitive ancestry and an atavistic return to earlier less developed forms", writes Herzig, a professor of gender and sexuality studies at Bates College in Maine. Darwin also suggests having less body hair was an indication of being more evolved and sexually attractive. As Darwin's ideas polarized, other 19th century medical and scientific experts started to link hairiness to "sexual inversion, disease pathology, lunacy, and criminal violence". Those connotations, where mostly applied to women's and not men's body hair.
By the early 20th century, the upper- and middle-class white America increasingly saw smooth skin as a marker of femininity, and female body hair as repulsive, with hair removal giving "a way to separate oneself from cruder people, lower class and immigrant".
Harper's Bazaar, in 1915, was the first women's fashion magazine to run a campaign devoted to the removal of underarm hair as "a necessity". Shortly after, Gillette launched the first safety razor marketed specifically for women—the "Milady Décolleté Gillette", one that solves "..an embarrassing personal problem" and to keep the underarm "..white and smooth".
Body hair characteristics such as thickness and length varies across human populations, some people have less pronounced body hair and others more conspicuous body hair characteristics.
Each culture of human society developed social norms relating to the presence or absence of body hair, which has changed from one time to another. Different standards of human physical appearance and physical attractiveness can apply to females and males. People whose hair falls outside a culture's aesthetic body image standards may experience real or perceived social acceptance problems, psychological distress and social pressure. For example, for women in several societies, exposure in public of body hair other than head hair, eyelashes and eyebrows is generally considered to be unaesthetic, unattractive and embarrassing.
With the increased popularity in many countries of women wearing fashion clothing, sportswear and swimsuits during the 20th century and the consequential exposure of parts of the body on which hair is commonly found, there has emerged a popularization for women to remove visible body hair and hirsutism, such as on legs, underarms and elsewhere. In most of the Western world, for example, the vast majority of women regularly shave their legs and armpits, while roughly half also shave hair that may become exposed around their bikini pelvic area (often termed the "bikini line").
In Western and Asian cultures, in contrast to most Middle Eastern cultures, a majority of men are accustomed to shave their facial hair, so only a minority of men reveal a beard, even though fast-growing facial hair must be shaved daily to achieve a clean-shaven or beardless appearance. Some men shave because they cannot genetically grow a "full" beard (generally defined as an even density from cheeks to neck), their beard color is genetically different from their scalp hair color, or because their facial hair grows in many directions, making a groomed or contoured appearance difficult to achieve. Some men shave because their beard growth is very excessive, unpleasant, or coarse, causing skin irritation. Some men grow a beard or moustache from time to time to change their appearance or visual style.
Some men tonsure or head shave, either as a religious practice, a fashion statement, or because they find a shaved head preferable to the appearance of male pattern baldness, or in order to attain enhanced cooling of the skull – particularly for people suffering from hyperhidrosis. A much smaller number of Western women also shave their heads, often as a fashion or political statement.
Some women also shave their heads for cultural or social reasons. In India, tradition required widows in some sections of the society to shave their heads as part of being ostracized (see Women in Hinduism § Widowhood and remarriage). The outlawed custom is still infrequently encountered mostly in rural areas. The society at large and the government are working to end the practice of ostracizing widows. In addition, it continues to be common practice for men to shave their heads prior to embarking on a pilgrimage.
Women with unibrows is considered a sign of beauty and attractive in Oman and for both genders in Tajikistan, often emphasized with kohl. In Middle Eastern societies, regular trimming or removal of female and male underarm hair and pubic hair has been considered proper personal hygiene, necessitated by local customs, for many centuries. Young girls and unmarried women, however, are expected to retain their body hair until shortly before marriage, when the whole body is depilated from neck down.
In China, body hair has long been regarded normal, and even today woman are confronted with far less social pressure to remove body hair. The same exists for other countries in Asia. Whilst hair removal has become routine for many of the continent's younger women, trimming or removing pubic hair, for instance, is not as common or popular as in the Western world, where both women and men may trim or remove all their pubic hair for aesthetic or sexual reasons. This custom can be motivated by reasons of potentially increased personal cleanliness or hygiene, heightened sensitivity during sexual activity, or the desire to take on a more exposed appearance or visual appeal, or to boost self-esteem when affected by excessive hair. In Korea, for example, pubic hair has long been considered a sign of fertility and sexual health, and it has been reported in the mid-2010s that some Korean women were undergoing pubic hair transplants, to add extra hair, especially when affected by the condition of pubic atrichosis (or hypotrichosis), which is thought to affect a small percentage of Korean women.
Moreover, unwanted or excessive hair is often removed in preparatory situations by both sexes, in order to avoid any perceived social stigma or prejudice. For example, unwanted or excessive hair may be removed in preparation for an intimate encounter, or before visiting a public beach or swimming pool.
Though traditionally in Western culture women remove body hair and men do not, some women choose not to remove hair from their bodies, either as a non-necessity or as an act of rejection against what they regard a social stigma, while some men remove or trim their body hair, a practice that is referred to in modern society as being a part of "manscaping" (a portmanteau expression for male-specific grooming).
The term glabrousness also has been applied to human fashions, wherein some participate in culturally motivated hair removal by depilation (surface removal by shaving, dissolving), or epilation (removal of the entire hair, such as waxing or plucking).
Although the appearance of secondary hair on parts of the human body commonly occurs during puberty, and therefore, is often seen as a symbol of adulthood, removal of this and other hair may become fashionable in some cultures and subcultures. In many modern Western cultures, men are encouraged to shave their beards, and women are encouraged to remove hair growth in various areas. Commonly depilated areas for women are the underarms, legs, and pubic hair. Some individuals depilate the forearms. In recent years, bodily depilation in men has increased in popularity among some subcultures of Western males.
For men, the practice of depilating the pubic area is commonly referred to as manscaping, even though technically this term is applicable to hair removal all over the body. Many men will try this at some point in their lives, especially for aesthetic reasons. Most men will use a razor to shave this area, however, as best practice, it is recommended to use a body trimmer to shorten the length of the hair before shaving it off completely.
In ancient Egypt, depilation was commonly practiced, with pumice and razors used to shave. In both Ancient Greece and Ancient Rome, the removal of body and pubic hair may have been practiced among both men and women. It is represented in some artistic depictions of male and female nudity, examples of which may be seen in red figure pottery and sculptures like the Kouros of Ancient Greece in which both men and women were depicted without body or pubic hair. Emperor Augustus was said, by Suetonius, to have applied "hot nutshells" on his legs as a form of depilation.
The majority of Muslims believe that adult removal of pubic and axillary hair, as a hygienic measure, is religiously beneficial.
Baptized Sikhs are specifically instructed to have unshorn Kesh (the hair on their head and beards for men) this is a major tenet of the Sikh faith (see Kesh).
In the clothes free movement, the term "smoothie" refers to an individual who has removed their body hair. In the past, such practices were frowned upon and in some cases, members of clothes-free clubs were forbidden to remove their pubic hair: violators could face exclusion from the club. Enthusiasts grouped together and formed societies of their own that catered to that fashion and the fashion became more popular, with smoothies becoming a major percentage at some nudist venues. The first Smoothie club (TSC) was founded by a British couple in 1991. A Dutch branch was founded in 1993 in order to give the idea of a hairless body greater publicity in the Netherlands. Being a Smoothie is described by its supporters as exceptionally comfortable and liberating. The Smoothy-Club is also a branch of the World of the Nudest Nudist (WNN) and organizes nudist ship cruises and nudist events every month. Every year in spring the club organizes the international Smoothy days.
Head-shaving (tonsure) is a part of some Buddhist, Christian, Muslim, Jain and Hindu traditions. Buddhist and Christian monks generally undergo some form of head-shaving or tonsure during their induction into monastic life. Brahmin children have their heads ritualistically shaved before beginning school. The Amish religion forbids men from having mustaches, as they are associated with the military.
In some parts of the Theravada Buddhist world it is common practice to shave the heads of children. Weak or sickly children are often left with a small topknot of hair to gauge their health and mark them for special treatment. When health improves, the lock is cut off.
In Judaism there is no obligation to remove unwanted body hair or facial hair, unless the woman wishes to do so. However, in preparation for a woman's immersion in a ritual bath after concluding her days of purification (following her menstrual cycle), the custom of Jewish women is to shave off their pubic hair. Jewish men are prohibited from using a razor to shave their beards or sideburns, and, by custom, neither men nor women may cut their hair or shave during a 30-day mourning period after the death of an immediate family member.
The Baháʼí Faith recommends against complete and long-term head-shaving outside of medical purposes. It is not currently practiced as a law, contingent upon a future decision by the Universal House of Justice, its highest governing body. Sikhs take an even stronger stance, opposing all forms of hair removal. One of the "Five Ks" of Sikhism is Kesh, meaning "hair". To Sikhs, the maintenance and management of long hair is a manifestation of one's piety.
Under Muslim law (Sharia), it is recommended to keep the beard, and that which is the object of recommendation (foot, hand, back, and chest hair). A Muslim may trim or cut hair on the head. The hairs on the chest and the back may be removed. In the 9th century, the use of chemical depilatories for women was introduced by Ziryab in Al-Andalus.
Ancient Egyptian priests also shaved or depilated all over daily, so as to present a "pure" body before the images of the gods.
The body hair of surgical patients is often removed beforehand on skin surrounding surgical sites. Shaving was the primary form of hair removal until reports in 1983 showed that it may lead to increased risk of infection.  Clippers are now the recommended ore-surgical hair removal method.
Some people with trichiasis find it medically necessary to remove ingrown eyelashes.
The shaving of hair has sometimes been used in attempts to eradicate lice or to minimize body odor due to accumulation of odor-causing micro-organisms in hair. In extreme situations, people may need to remove all body hair to prevent or combat infestation by lice, fleas and other parasites. Such a practice was used, for example, in Ancient Egypt.
It has been suggested that an increasing percentage of humans removing their pubic hair has led to reduced crab louse populations in some parts of the world.
A close-cropped or completely shaven haircut is common in military organizations. In field environments soldiers are susceptible to infestation of lice, ticks, and fleas. In addition, short hair is also more difficult for an enemy to grab hold of in hand-to-hand combat, and short hair makes fitting military gas masks and helmets easier.
The practice serves to cultivate a group-oriented environment through the process of removing exterior signs of individuality. In many militaries, head-shaving is mandatory for males when beginning their training. However, even after the initial recruitment phase, when head-shaving is no longer required, many soldiers maintain a completely or partially shaven hairstyle (such as a "high and tight", "flattop" or "buzz cut") for personal convenience and an exterior symbol of military solidarity. Head-shaving is not required and is often not allowed of females in military service, although they must have their hair cut or tied to regulation length.
Armies may also require males to maintain clean-shaven faces as facial hair can prevent an air-tight seal between the face and breathing or safety equipment, such as a pilot's oxygen mask, a diver's mask, or a soldier's gas mask. The process of testing if a mask is an adequately good fit to a person's face is known as a "respirator fit test".
It is a common practice for professional footballers (soccer players) and road cyclists to remove leg hair for a number of reasons. In the case of a crash or tackle, the absence of the leg hair means the injuries (usually road rash or scarring) can be cleaned up more efficiently, and treatment is not impeded. Professional cyclists, as well as professional footballers, also receive regular leg massages, and the absence of hair reduces the friction and increases their comfort and effectiveness. Football players are also required to wear shin guards, and in case of a skin rash the affected area can be treated more efficiently.
It is also common for competitive swimmers to shave the hair off their legs, arms, and torsos, to reduce drag and provide a heightened "feel" for the water by removing the exterior layer of skin along with the body hair.
In some situations people's hair is shaved as a punishment or a form of humiliation. After World War II, head-shaving was a common punishment in France, the Netherlands, and Norway for women who had collaborated with the Nazis during the occupation, and, in particular, for women who had sexual relations with an occupying soldier.
In the United States, during the Vietnam War, conservative students would sometimes attack student radicals or "hippies" by shaving beards or cutting long hair. One notorious incident occurred at Stanford University, when unruly fraternity members grabbed Resistance founder (and student-body president) David Harris, cut off his long hair, and shaved his beard.
During European witch-hunts of the Medieval and Early Modern periods, alleged witches were stripped naked and their entire body shaved to discover the so-called witches' marks. The discovery of witches' marks was then used as evidence in trials.
Inmates have their head shaved upon entry at certain prisons.
Many products in the market have proven fraudulent. Many other products exaggerate the results or ease of use.
"Depilation", or temporary removal of hair to the level of the skin, lasts several hours to several days and can be achieved by
"Epilation", or removal of the entire hair from the root, lasts several days to several weeks and may be achieved by
Electrology has been practiced in the United States since 1875. It is approved by the FDA. This technique permanently destroys germ cells responsible for hair growth by way of insertion of a fine probe in the hair follicle and the application of a current adjusted to each hair type and treatment area. Electrology is the only permanent hair removal method recognized by the FDA.
A 2006 review article in the journal "Lasers in Medical Science" compared intense pulsed light (IPL) and both alexandrite and diode lasers. The review found no statistical difference in effectiveness, but a higher incidence of side effects with diode laser-based treatment. Hair reduction after 6 months was reported as 68.75% for alexandrite lasers, 71.71% for diode lasers, and 66.96% for IPL. Side effects were reported as 9.5% for alexandrite lasers, 28.9% for diode lasers, and 15.3% for IPL. All side effects were found to be temporary and even pigmentation changes returned to normal within 6 months.
A 2006 meta-analysis of randomized controlled trials found that alexandrite and dioded lasers caused 50% hair reduction for up to 6 months, while there was no evidence of hair reduction from intense pulsed light, neodymium-YAG or ruby lasers.
Many methods have been proposed or sold over the years without published clinical proof they can work as claimed.
There are several disadvantages to many of these hair removal methods.
Hair removal can cause some issues: skin inflammation, minor burns, lesions, scarring, ingrown hairs, bumps, and infected hair follicles.
Some removal methods are not permanent, can cause medical problems and permanent damage, or have very high costs. Some of these methods are still in the testing phase and have not been clinically proven.
One issue that can be considered an advantage or a disadvantage depending upon an individual's viewpoint, is that removing hair has the effect of removing information about the individual's hair growth patterns due to genetic predisposition, illness, androgen levels (such as from pubertal hormonal imbalances or drug side effects), and/or gender status.
In the hair follicle, stem cells reside in a discrete microenvironment called the bulge, located at the base of the part of the follicle that is established during morphogenesis but does not degenerate during the hair cycle. The bulge contains multipotent stem cells that can be recruited during wound healing to help the repair of the epidermis.