Synopsis

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

Beta-carotene, a precursor to vitamin A, has been studied for its potential photoprotective effects against sunburn. The scientific rationale is that beta-carotene acts as an antioxidant, neutralizing reactive oxygen species generated by ultraviolet (UV) radiation, thereby reducing oxidative stress and cellular damage in the skin. Several controlled studies have investigated the efficacy of beta-carotene supplementation in reducing the severity or risk of sunburn, with mixed results.

Some clinical trials indicate that taking high doses of beta-carotene (usually >15-30 mg per day) over several weeks can increase the skin’s minimal erythema dose (MED)—the threshold of UV exposure required to cause redness—suggesting a modest protective effect. However, the degree of protection is relatively low compared to topical sunscreens, and the benefit appears to require sustained supplementation. Meta-analyses and systematic reviews (such as those by Stahl et al., 2006, and Cho et al., 2010) conclude that while beta-carotene does offer some photoprotection, it is not sufficient as a standalone preventive measure against sunburn. There is little evidence that beta-carotene can treat existing sunburn.

In summary, there is scientific evidence supporting the use of beta-carotene for supporting sunburn prevention, but the effect is modest, dose-dependent, and not a substitute for topical protection. The evidence for treating active sunburn is lacking. Topical sunscreens and physical protection remain the mainstay for sunburn prevention.

More about beta-carotene
More about Sunburn

Other ingredients used for Sunburn

Other health conditions supported by beta-carotene

Products containing beta-carotene