What it is
Marrubium Vulgare Extract is derived from white horehound, a hardy herb in the Lamiaceae (mint) family traditionally grown across Europe and Asia. The extract carries the plant's water-soluble constituents and is used in formulas as a conditioning and skin-protecting botanical. In sunscreens it appears as a supporting plant ingredient rather than as an active filter.
Safety & warnings
Horehound extract is generally well tolerated at the low levels used in cosmetics. As a mint-family botanical it may rarely provoke sensitivity in individuals reactive to plant extracts, so patch testing is sensible for very reactive skin.
Origin & sourcing
Natural; extracted from the aerial parts of Marrubium vulgare, a perennial herb of the mint family native to Europe, North Africa, and parts of Asia.
Questions everyone asks
What is white horehound?
It is a herb in the mint family, here used as a botanical extract for skin conditioning and protecting rather than for any UV effect.
Does this extract filter UV light?
No. It is a supporting botanical conditioning ingredient and provides no measurable sun protection.