What it is
Swertia japonica is a small flowering plant in the gentian family, known in Japan as senburi and traditionally valued as a bitter herb. The extract is used in skin and scalp care for its conditioning properties and is a long-standing ingredient in Japanese cosmetic formulations. In sunscreens it serves as a supporting botanical rather than as a UV filter.
Safety & warnings
As with other botanical extracts, the main consideration is the potential for sensitization in predisposed individuals, but it is generally regarded as a mild conditioning ingredient at cosmetic concentrations.
Origin & sourcing
Natural. It is obtained from the aerial parts of Swertia japonica, a plant native to East Asia.
History
Swertia japonica (senburi) has a long history in Japanese folk use as a bitter botanical, and the extract has been incorporated into Japanese cosmetics, particularly hair and scalp products, for many years.
Questions everyone asks
What plant does this extract come from?
It comes from Swertia japonica, a gentian-family plant known in Japan as senburi, traditionally used as a bitter herb.
Does it provide sun protection?
No. It is a botanical conditioning ingredient and does not act as a UV filter; the sunscreen's protection comes from dedicated filters.