Hypericum perforatum, also known as St. John’s wort, is a species of flowering plant native to temperate parts of Europe and Asia. Extracts from the flowers, leaves, and stem of this plant have traditionally been used to treat superficial wounds, scars and burns. The primary phytochemical constituent of Hypericum perforatum flower/leaf/stem extract is hyperforin.

Hypericum perforatum flower/leaf/stem extract is used in skin care products because it has the ability to activate the skin’s natural repair process. The phytochemical hyperforin stimulates growth and differentiation of keratinocytes (skin cells), which promotes a healthy complexion. Additionally, Hypericum perforatum flower/leaf/stem extract has astringent qualities, which helps to degrease oily skin, as well as temporarily tone and tighten the skin.