Evidence supporting the use of: Marine fat (unspecified)
For the health condition: Skin Care (general)

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Synopsis

Source of validity: Traditional
Rating (out of 5): 2

Marine fat, such as fish oil or other unspecified marine-derived fats, has a history of traditional use in skin care, particularly in coastal communities who have long utilized fish oils for their emollient and protective properties. Historically, these fats were applied topically to alleviate dryness, improve skin barrier function, and soothe irritated skin—uses recorded in folk remedies in Scandinavia, Russia, and among Inuit populations. The rationale behind these practices is largely attributed to the high content of omega-3 fatty acids (such as EPA and DHA) and vitamins like A and D, which are beneficial for skin health. However, scientific validation for the topical use of "marine fat (unspecified)" for general skin care is limited. While there is moderate evidence supporting oral supplementation of fish oil for certain skin conditions (e.g., atopic dermatitis, psoriasis), robust clinical trials specifically examining topical application are scarce. Most research focuses on purified components rather than crude marine fat. Therefore, traditional use underpins its reputation in skin care, but scientific evidence for topical efficacy remains limited and indirect.

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