Evidence supporting the use of: Sea vegetable (unspecified)
For the health condition: Skin Care (general)

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Synopsis

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

Sea vegetables, such as kelp, nori, wakame, and other edible seaweeds, have a long history of use in traditional medicine systems, particularly in East Asia, to promote general health, including skin health. Historically, these sea vegetables have been valued for their rich nutrient content, including vitamins (A, C, E), minerals (iodine, zinc), and antioxidants, which are believed to contribute to healthy skin when consumed as part of the diet. There is also a tradition of using seaweed extracts in topical applications, such as baths or poultices, to soothe and moisturize the skin. However, while these traditional uses persist and seaweed-based skincare products are popular in modern cosmetics, scientific evidence directly linking sea vegetable consumption or topical use to specific improvements in general skin health is limited. Some laboratory studies suggest that certain seaweed compounds may have antioxidant or anti-inflammatory properties, but robust clinical trials in humans are lacking. Thus, the use of unspecified sea vegetables for general skin care is justified primarily by traditional usage, with only modest scientific support.

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