Synopsis

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

Beta-zeacarotene is a carotenoid structurally similar to beta-carotene and is found in some fruits and vegetables. Carotenoids, including beta-carotene and zeaxanthin, have been studied for their photoprotective properties due to their antioxidant effects. While beta-carotene has moderate evidence supporting its use in reducing sunburn severity and improving skin’s resistance to UV-induced erythema when taken as a supplement over several weeks, specific research on beta-zeacarotene is much more limited. A few studies on mixed carotenoids (which may include beta-zeacarotene) suggest potential benefits in supporting skin health and reducing sunburn risk, likely due to their general antioxidant activity and capacity to quench singlet oxygen generated by UV radiation.

However, the majority of controlled studies have focused on beta-carotene rather than beta-zeacarotene specifically. The evidence for beta-zeacarotene’s effectiveness in sunburn prevention or treatment is therefore indirect, based on its chemical similarity to better-studied carotenoids. As such, while there is a plausible scientific rationale, direct clinical evidence is limited or absent, and its use is not as well substantiated as for some other carotenoids. Thus, the evidence supporting beta-zeacarotene for sunburn is rated as low to moderate (2/5).

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