International Journal of Trichology International Journal of Trichology
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REVIEW ARTICLE
Year : 2018  |  Volume : 10  |  Issue : 6  |  Page : 262-270

Scalp condition impacts hair growth and retention via oxidative stress


1 Center for Dermatology and Hair Diseases, University of Zurich, Wallisellen, Switzerland
2 The Procter and Gamble Company, Cincinnati, OH, USA
3 Sharon Woods Innovation Center, Cincinnati, OH, USA

Correspondence Address:
Prof. Ralph M Trueb
Center for Dermatology and Hair Diseases, Bahnhofplatz 1A, CH-8304 Wallisellen
Switzerland
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Source of Support: None, Conflict of Interest: None


DOI: 10.4103/ijt.ijt_57_18

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Conventionally, the medical focus has been either on hair loss or the condition of the scalp in terms of specific dermatological diseases. Indeed, the proximate structural arrangement of the scalp and hair leads to an interdependent relationship between the two. While protective benefits of the hair to the scalp are obvious, the role of the scalp as an incubatory environment for the preemergent hair fiber has largely been ignored. In fact, there is a wealth of observational data on specific dermatological conditions of the scalp providing evidence for the role of the scalp condition in supporting the production of healthy hair. Oxidative stress, the inability of the body to sufficiently counteract the sources of oxidation, is prevalent in many skin conditions, including normal skin aging. On the scalp, the hair appears to be impacted prior to emergence, and oxidative stress appears to play a role in premature hair loss. The scalp commensal organism, Malassezia, has been recognized to be a source of oxidative damage. Therefore, hair care products, specifically shampoos, with active Malassezia inhibitory agents, such as zinc pyrithione, tend to reduce premature hair loss, besides the known benefits in treating specific dermatologic scalp pathologies, and therefore should represent an integral part of every treatment regimen for hair loss, even in individuals not showing symptoms of scalp pathologies.


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