What it is
Bioflavonoids are a broad class of polyphenolic plant compounds, often obtained from citrus and other botanical sources, included in cosmetics for their antioxidant character. In skincare they help support the formula and skin against oxidative stress and contribute a conditioning effect. In sunscreens they typically appear at low levels as a supportive antioxidant component.
Safety & warnings
Bioflavonoids are generally well tolerated in topical cosmetic use. Because they are a broad group from varied plant sources, individuals with specific botanical sensitivities should patch test. They are not associated with comedogenicity at typical use levels.
Origin & sourcing
Natural; a family of flavonoid compounds extracted from plants, commonly citrus fruits and other botanical sources rich in polyphenols.
History
Flavonoids were historically grouped under the informal label vitamin P for their effects studied in nutrition, a designation no longer recognized as a true vitamin. Their use as topical cosmetic antioxidants is a modern application.
Questions everyone asks
What are bioflavonoids?
They are a group of plant polyphenols called flavonoids, often sourced from citrus, used in skincare mainly for their antioxidant and conditioning properties.
Why are they in sunscreen?
They are added as supportive antioxidants to help defend the formula and skin against oxidative stress, complementing the UV filters that do the protective work.