Editing Electrology

{{Short description|Method of hair removal}}
{{about|the method of hair removal|the chemical process|Electrolysis}}
{{More citations needed|date=November 2024}}
{{Confused|Laser hair removal}}[[File:1938-01-Washington-DC-Electrolysis.jpg|thumb|right|A [[beauty store]] advertising electrolysis hair removal, circa 1938]]

'''Electrology''' is the practice of electrical [[hair removal]] to permanently remove [[human hair]] from the body. '''Electrolysis''' is the actual process of removing hair using [[electricity]].

In electrolysis, a qualified professional called an electrologist slides a hair-thin, solid metal probe into each [[hair follicle]] without puncturing the [[Human skin|skin]] (when inserted properly). Electricity is delivered to the follicle through the probe, which causes localized damage to the areas that generate hairs, either through the formation of caustic [[sodium hydroxide]] (the galvanic method), overheating ([[thermal decomposition|thermolysis]]), or both (the blend method).

==Methods==
All three methods (galvanic, thermolysis, and blend) have their own merits, and one method is not better than another. The success depends on the skill of the electrologist, the type of hair being removed, the condition of the skin and the pain threshold of the client. All three methods, when properly performed, can be thorough at destroying the [[hair matrix]] cells, and leaving follicles incapable of regrowing hair.

===Galvanic method===
This method is named after [[Luigi Galvani]] and uses a person's body as an [[electrolytic cell]]. Galvanic electrolysis was first reported in medical literature in 1875 by [[ophthalmologist]] [[Charles Michel (American ophthalmologist)|Charles Michel]] as a method for removing [[trichiasis|ingrown eyelashes]].<ref name="michel">{{cite journal | author = Michel CE | date = Oct 1875 | title = Trichiasis and distichiasis; with an improved method for radical treatment | url = | journal = St. Louis Clinical Record | volume = 2 | issue = | pages = 145–148 }}</ref> A galvanic hair remover is essentially a positive ground power supply that delivers 0–3 [[ampere|milliamperes]] through the body. The follicular probe is the [[cathode]] of an electrolytic cell. [[Sodium hydroxide]] formed at the cathode by the process of chemical [[electrolysis]] kills the hair matrix cells. Modern galvanic hair removers automatically adjust the voltage to maintain constant current.
===Thermolysis===
Another method is known as '''thermolysis''', also called radio frequency (RF), shortwave or [[diathermy]]. 
Thermolysis was developed in the 1920s and first reported in medical literature by Henri Bordier.<ref name="bordier">Bordier H. Nouveau traitment de l'hypertrichose par la diathermie. Vie Med., 1924, 5:561</ref> A thermolytic hair remover is essentially a [[radio transmitter]], usually with an output of about 0–8 watts at a frequency of 13.56 {{abbr|MHz|megahertz}}. RF energy emanates from the probe tip to tissue within about a millimeter. Thermolysis works by heating the hair matrix cells to about {{convert|48|to|50|C}}, causing [[electrocoagulation]].

===Blend method===
The galvanic method and thermolysis are often combined in the blend method, developed by [[Arthur Hinkel]] in 1948, which uses both RF and direct current, combining many of the advantages of both methods.<ref name="hinkel">Hinkel AR, Lind RW (1968). ''Electrolysis, Thermolysis and the Blend: the principles and practice of permanent hair removal. ''Los Angeles, CA: Arroway Publishers, {{ISBN|0-9600284-1-2}}</ref>

==Technique==
The practitioner selects a metal probe that slides easily into the hair follicle, usually the same diameter as the hair shaft or smaller. The probe is typically 50 to 150&nbsp;μm (0.002 to 0.006&nbsp;inches) for all three modalities. Care is needed to insert the probe at the same angle as the hair is growing out of the skin. The probe is inserted to the depth of the hair matrix, the site where hair is formed. The power and duration of the electricity are started at the lowest setting, then gradually increased until the hair comes out as easily as possible. If the patient experiences significant discomfort, the settings can be lowered.

==Status of the profession==
{{Globalize|section|USA|2name=the United States|date=April 2012}}

In the United States, electrolysis is regulated in many states, requiring training and licensing.<ref name="aea-licensure">{{cite web |url=https://professionals.electrology.com/be-an-electrologist/electrology-licensing-requirements.php |title=Electrology Licensure by State |publisher=American Electrology Association |url-status=live |archive-url=https://web.archive.org/web/20241207115743/https://professionals.electrology.com/be-an-electrologist/electrology-licensing-requirements.php |archive-date=7 December 2024 |access-date=19 February 2025}}</ref>

Electrolysis as a profession faced new competition in the 1990s after [[laser hair removal]] was developed and promoted as a quicker and easier way to remove hair. However, the [[U.S. Food and Drug Administration]] (FDA) declared laser can only claim to reduce hair growth, not permanently remove it.<ref name="fda-laser">{{cite web |url=https://www.fda.gov/radiation-emittingproducts/resourcesforyouradiationemittingproducts/ucm252757.htm |url-status=live |archive-url=https://web.archive.org/web/20180725213940/https://www.fda.gov/radiation-emittingproducts/resourcesforyouradiationemittingproducts/ucm252757.htm |archive-date=25 July 2018 |title=Laser Facts |publisher=U.S. Food and Drug Administration |access-date=26 September 2018}}</ref>

==See also==
* [[Hair removal]]
** [[Laser hair removal]]
* [[Intense pulsed light]] (skin treatment technology)

==References==
{{reflist}}

{{Cosmetics}}
{{Human hair}}
{{Electrolysis}}

[[Category:Hair removal|Electrology]]