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Research Letters
Oct 2012

Use of Olive Oil for the Treatment of Seborrheic Dermatitis in Children

Author Affiliations

Author Affiliations: Departments of Dermatology and Pediatrics, St Louis University School of Medicine, St Louis, Missouri (Dr Siegfried). Dr Glenn was a medical student at the St Louis University School of Medicine and is now with the Department of Pediatrics at Children's Hospital and Research Center Oakland, Oakland, California.

Arch Pediatr Adolesc Med. 2012;166(10):967. doi:10.1001/archpediatrics.2012.765

Seborrheic dermatitis is a common complaint brought to pediatricians. Also known as “cradle cap” in infants and “dandruff” in adolescents, the condition is believed to be triggered by Malassezia yeasts.1 The natural course correlates androgen-driven excess sebum production: spontaneous improvement by age 1 year and reoccurrence with puberty. Treatment of this condition has supported a billion dollar market for over-the-counter treatments,2 loosely regulated by a Food and Drug Administration monograph.

The Internet provides easy access to several websites that give directions for home treatments. A popular approach is application of oil (olive, vegetable, or mineral), left on for as short as 15 minutes or as long as overnight, followed by brushing to loosen scales, and finally shampooing.36

While oil application may be risk free, a potential concern arises when considering a possible Malassezia virulence factor regulated by its metabolic lipid pathways. In vivo, Malassezia digests sebum into saturated and unsaturated fatty acids.1 Only the saturated molecules are essential while the unsaturated fatty acids are a by-product.1 Organic oils (such as olive oil) contain both saturated and unsaturated lipids and may be counterproductive to treat a condition whose etiology is linked to Malassezia. In fact, olive oil is a standard in vitro culture media for Malassezia.7 Saturated fatty acids likely encourage Malassezia overgrowth and excess unsaturated fatty acids may induce inflammation and scaling. As nondigestible oil, mineral oil may provide a triglyceride-free alternative to organic oils.

Based on the evidence currently available, it may be prudent to avoid organic oils, especially olive oil, when treating seborrheic dermatitis or other inflammatory skin diseases triggered by colonizing microflora.

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Article Information

Correspondence: Dr Glenn, 600 William St, Ste 328, Oakland, CA 94602 (eglenn@slu.edu).

Published Online: August 13, 2012. doi:10.1001 /archpediatrics.2012.765

Author Contributions:Study concept and design: Siegfried. Acquisition of data: Siegfried and Glenn. Analysis and interpretation of data: Siegfried and Glenn. Drafting of the manuscript: Siegfried and Glenn. Critical revision of the manuscript for important intellectual content: Siegfried. Study supervision: Siegfried.

Financial Disclosure: None reported.

References
1.
Ro BI, Dawson TL. The role of sebaceous gland activity and scalp microfloral metabolism in the etiology of seborrheic dermatitis and dandruff.  J Investig Dermatol Symp Proc. 2005;10(3):194-197PubMedArticle
2.
Maddin S, ed. Medicated shampoos are effective in many scalp conditions.  Skin Therapy Lett. 1997;2(6):3-4http://www.skintherapyletter.com/1997/2.6/3.html
3.
 Ask Dr Sears: persistent cradle cap. Parenting website. http://www.parenting.com/article/ask-dr-sears-persistant-cradle-cap. Accessed January 5, 2012
4.
 Cradle cap. AskDrSears website. http://www.askdrsears.com/content/cradle-cap. Accessed January 5, 2012
5.
 10 Ways to prevent and treat cradle cap. Discovery Fit and Health website. http://health.howstuffworks.com/skin-care/problems/baby/5-ways-to-prevent-cradle-cap3.htm. Accessed January 5, 2012
6.
 Olive oil remedies for dandruff. eHow Style website. http://www.ehow.com/way_5690045_olive-oil-remedies-dandruff.html. Accessed January 10, 2012
7.
Kaneko T, Makimura K, Abe M,  et al.  Revised culture-based system for identification of Malassezia species.  J Clin Microbiol. 2007;45(11):3737-3742PubMedArticle
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