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Hair is normally removed for social and sexual reasons related to the social role of hair in human society. Many cultures have an aesthetic "ideal" amount of hair for males and females. People whose hair violates such standards may experience real or perceived problems with social acceptance.

hair removal patient before and after

Permanent hair removal involves several imperfect options. A number of methods have been developed that use chemicals, energy of varying types, or a combination to target the areas that regulate hair growth. Permanently destroying these areas while sparing surrounding tissue is a difficult challenge.

 

Permanent hair removal for most

* Electrolysis

Permanent hair reduction for some

* Laser
* Flashlamp (also called Intense Pulsed Light or IPL)

Lasting hair inhibition for many (requires continuous use)

* Prescription oral medications
* A new method of epilation is to use enzymes that inhibit the development of new hair cells. Hair growth will become less and less until it finally stops, normal depilation/epilation will be performed during that time. Products include the presciption drug Vaniqa (active ingredient eflornithine hydrochloride inhibiting the enzyme ornithine decarboxylase) - effective for 46% of women. Depilation lasting several hours to several days can be achieved by:

* Shaving or trimming (manually or with electric shavers)
* Depilatories (creams or "shaving powders" which chemically dissolve hair)
* Friction (rough surfaces used to buff away hair)

Epilation lasting several days to several weeks can be achieved by:

* Waxing (a hot or cold layer is applied and then removed with porous strips)
* Plucking (hairs are plucked, or pulled out, with tweezers)
* Sugaring (similar to waxing, but with a sticky paste)
* Threading (also called fatlah or khite, in which a twisted thread catches hairs as it's rolled across the skin)
* Rotary epilators (devices which rapidly grasp hairs and pull them out by the root)

Some methods are still in the experimental stage or have been banned for most uses due to adverse effects.

* X-ray (banned in the United States)
* Photodynamic therapy (experimental)

Many methods have been proposed or sold over the years without published clinical proof they can work as claimed.

* Electric tweezers
* "Transdermal electrolysis"
* "Transcutaneous hair removal"
* Photoepilators
* Microwaves
* Foods and Dietary supplements
* Nonprescription topical preparations (also called "hair inhibitors," "hair retardants," or "hair growth inhibitors")

Many men in Western cultures shave their facial hair, so a minority of men have a beard, even though fast-growing facial hair must be shaved daily to achieve a clean-shaven or hairless look. Some men shave because they cannot grow a "full" beard (generally defined as an even density from cheeks to neck), because beard color is different than scalp hair color, or because it grows in many directions, making a groomed look difficult. Some men shave because their beards are very coarse, causing itchiness and irritation. Some men grow a beard from time to time to change their appearance.

In many cultures, women frequently remove their body hair, believing it is unattractive and not feminine (see gender role). Women may also remove some or even all of their pubic hair to look more youthful and attractive for their sexual mates or themselves. The practice is most common among upper-class women, who get treated with lasers or electrolysis to permanently remove body hair and save future labor. Many women of African descent commonly shave their pubic hair to reduce irritation during sexual intercourse.

 

Hair Removal is in!

Some men shave their heads, either as a fashion statement or to cover up male pattern baldness. A much smaller number of women also shave their heads as fashion or political statements.

Epilation performed by laser was performed experimentally for about 20 years before it became commercially available in the mid 1990's. Laser and light-based methods are sometimes called phototricholysis or photoepilation.

In addition to lasers, some light-based epilators use a xenon flashlamp which emits full-spectrum intense pulsed light (IPL) . Treatment with this device is sometimes popularly referred to as laser hair removal, though the device is not a laser per se.

The primary principle behind laser hair removal is selective photothermolysis. Lasers can cause localized damage by selectively heating dark target matter in the area that causes hair growth while not heating the rest of the skin. Light is absorbed by dark objects, so laser energy can be absorbed by dark material in the skin (but with much more speed and intensity). This dark target matter, or chromophore, can be naturally-occurring or artificially introduced.

Hair removal lasers selectively target one of three chromophores:

* Carbon, which is introduced into the hair follicle by rubbing a carbon-based lotion into the skin following waxing (this lotion is an "exogenous chromophore"). When irradiated by a Q-switched Nd:YAG laser, the carbon causes a shock wave capable of mechanically damaging nearby cells. This method has been abandoned since it does not cause permanent loss. (It has been replaced with the long-pulsed Nd:YAG laser which targets endogenous melanin in the follicle.)

* Hemoglobin, which occurs naturally in blood (it gives blood its red color). It preferentially absorbs wavelengths from argons, and to a lesser extent from rubies, alexandrites, and diodes. It minimally absorbs the Nd:YAG laser wavelength. Hemoglobin is not a primary target for laser hair removal.

* Melanin is considered the primary chromophore for all hair removal lasers currently on the market. Melanin occurs naturally in the skin (it gives skin and hair its color). There are two types of melanin in hair: eumelanin (which gives hair brown or black color) and pheomelanin (which gives hair blonde or red color). Because of the selective absorption of photons of laser light, only black or brown hair can be removed.

Any laser light beam intended for topical use can only penetrate skin tissue two millimeters deep. As such, there has been great controversy surrounding the laser industry claims to what most people think of when they hear the word "permanent". Many class actions lawsuits are settled out of court so the damaging information is never made into public record.

The dermal papilla is the only appropiate target of destruction, as it it is the only substructure of the hair shaft which can reproduce a new root system, and therefore a new hair shaft. The dermal papilla is located at a depth of 7-8 millimeters for coarse hair, and so is beyond the reach of laser.

The laser light beam, however, does a great job of vaporizing large areas, just not permanently. Challenge your laser tech to sign a "plain english" money back guarantee if you want to find out for yourself.

No form of laser is capable of permanent hair removal without scarring. At most, 5 percent of hair in a given area can be removed which adheres to the common usage of the word "permanent", usually because the hair root is not very thick in diameter, or have any pigment, and is therefore within the two milimeter range of the laser.

This is why laser techicians are required by law to use the term "reduction".

 

 

 

 

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