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Importing Wikidata short description: "Skin treatment with flashlamps" (Shortdesc helper) |
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Broad-[[light spectrum|spectrum]] [[light]] is applied to the surface of the [[skin]], targeting melanin. This light travels through the skin until it strikes the [[hair]] shafts or [[hair follicle]].<ref name=":2">{{Cite journal|last1=Husain|first1=Zain|last2=Alster|first2=Tina S|date=2016-02-04|title=The role of lasers and intense pulsed light technology in dermatology|journal=Clinical, Cosmetic and Investigational Dermatology|volume=9|pages=29–40|doi=10.2147/CCID.S69106|issn=1178-7015|pmc=4745852|pmid=26893574}}</ref> The follicle is usually where the highest concentration of [[melanin]] is located.<ref name=":0" /> As the light is absorbed, the bulb and most of the hair shaft are heated, destroying the hair-producing [[Papillary dermis|papilla]].<ref name=":2" /> It is also claimed that heat conversion occurs directly in the darker capillaries that bring blood to the follicle.<ref>{{Cite book|last=Lahiri|first=Koushik|url=https://books.google.com/books?id=-HKJDAAAQBAJ&q=The%20area%20to%20be%20treated%20should%20be%20clean%20shaven%20and%20free%20of%20sunburn.%20IPL&pg=PA55|title=Textbook of Lasers in Dermatology|date=2016-07-30|publisher=JP Medical Ltd|isbn=978-93-85999-62-8|pages=55|language=en}}</ref>
At any one time, not all hair follicles are ‘active’, and only active hair follicles can be affected by the treatment.<ref name=":1" /> ‘Inactive’ hair follicles can be treated as they become ‘active’ over time.{{Citation needed|date=March 2020}} For IPL treatments, an average of 8–10 treatments, 4-6 weeks apart, are required to remove most visible hair.<ref>{{Cite book|last=Lahiri|first=Koushik|url=https://books.google.com/books?id=-HKJDAAAQBAJ&q=The%20area%20to%20be%20treated%20should%20be%20clean%20shaven%20and%20free%20of%20sunburn.%20IPL&pg=PA55|title=Textbook of Lasers in Dermatology|date=2016-07-30|publisher=JP Medical Ltd|isbn=978-93-85999-62-8|pages=55|language=en}}</ref> Today, many laser clinics around the world categorically remove all hair 'permanently'; to quote SkinteX Laser Clinic in Scotland, UK (multiple award-winners), who state "unfortunately many operators do not understand the physics nor how the hair grows, and are unable to fully remove hair, whereas we do and only perform permanent hair removal, not 'partial' or 'temporary' hair removal".
There is no common treatment protocol, as it depends on the equipment used and patient skin type. The area to be treated should be clean shaven and free of sunburn.<ref>{{Cite book|last=Lahiri|first=Koushik|url=https://books.google.com/books?id=-HKJDAAAQBAJ&q=The%20area%20to%20be%20treated%20should%20be%20clean%20shaven%20and%20free%20of%20sunburn.%20IPL&pg=PA55|title=Textbook of Lasers in Dermatology|date=2016-07-30|publisher=JP Medical Ltd|isbn=978-93-85999-62-8|language=en}}</ref> Treatments are often given in doctors' offices and so-called "medspas" by trained practitioners.{{Citation needed|date=March 2020}}
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