What it is
This is a plant-derived extract obtained from the flowers of Hypericum perforatum, the common St. John's wort. In sun care and skincare it is used as a skin-conditioning ingredient and is valued for the plant's polyphenol and flavonoid content. It is not a UV filter and contributes no sun protection on its own.
Safety & warnings
Botanical extracts may cause irritation or allergic reactions in sensitive individuals, so patch testing is advisable. Hypericum perforatum contains hypericin, which is linked to photosensitivity at high systemic doses; the relevance in low-level topical cosmetic extracts is limited, but those with sun-reactive or very sensitive skin may wish to monitor their tolerance.
Origin & sourcing
Natural botanical extract derived from the flowers of the Hypericum perforatum plant (common St. John's wort).
History
St. John's wort has a long history of traditional botanical use, and its flower extracts have more recently been adopted as conditioning ingredients in cosmetics.
Questions everyone asks
What is St. John's wort flower extract used for here?
It serves as a skin-conditioning botanical ingredient, contributing plant polyphenols and a soothing feel within the formula.
Is it a sunscreen active?
No. It does not filter UV light and does not contribute to a product's SPF or broad-spectrum rating.