Evidence supporting the use of: Carotenoids
For the health condition: Skin Care (general)

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Synopsis

Source of validity: Scientific
Rating (out of 5): 4

Carotenoids, such as beta-carotene, lycopene, lutein, and astaxanthin, are pigments found in many fruits and vegetables and are recognized for their antioxidant properties. There is substantial scientific evidence supporting the use of carotenoids for general skin care, particularly in protecting the skin against ultraviolet (UV) radiation and oxidative stress. Multiple randomized controlled trials and observational studies have shown that dietary or supplemental carotenoids can increase the skin’s natural photoprotection, reducing erythema (redness) caused by UV exposure. For example, studies have demonstrated that regular consumption of lycopene-rich tomato products or beta-carotene supplements can increase the minimal erythema dose (MED), meaning the skin is more resistant to sunburn.

Carotenoids also contribute to skin health by neutralizing free radicals, thereby potentially delaying signs of aging and supporting skin barrier function. A 2021 review in the journal Nutrients highlighted evidence that various carotenoids improve skin hydration, elasticity, and overall appearance. Topical and oral applications have both been studied, with oral supplementation showing more consistent benefits. However, carotenoids are generally considered an adjunct, not a replacement, for topical sunscreens and other skin care strategies. While the evidence is strong for photoprotection and antioxidant effects, more research is needed for other skin benefits such as anti-wrinkle effects. Overall, the current scientific consensus supports the use of carotenoids for general skin care, especially for their protective and antioxidant roles.

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