Photo: Biswarup Ganguly, CC BY 3.0 (via Wikimedia Commons)

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Babchi

Psoralea corylifolia

Also known as Bakuchi, Bu Gu Zhi, Malaytea Scurfpea, Purple Fleabane, Kushtanashini

At a glance

Family

Fabaceae (the pea and legume family)

Type

Warm-season annual herb

Parts used

Seeds (fruit pods), occasionally leaves

Size

1 to 4 feet tall, with slender branching stems

Bloom

Small clusters of pale purple to blue flowers in mid to late summer

Habitat

Native to India and tropical Asia; found along sunny roadsides, riverbanks, and disturbed waste ground up to moderate elevations

Acquisition

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This plant in HerbSense

Key benefits

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Storied vitiligo and skin remedy

Traditional bone and joint tonic

Old-world hair growth treatment

Root of modern psoralen therapy

Traditional uses

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Long before dermatologists began using psoralen compounds in light-box therapy, healers across India and China were turning to the small, dark seeds of Babchi for the very same purpose, restoring color to skin marked by vitiligo and other patches of pigment loss. In Ayurvedic medicine it was known as a purifier of the blood and skin, while in Traditional Chinese Medicine, where it is called Bu Gu Zhi, meaning literally 'tonify the bone,' it found a place among the great kidney-yang tonics, prescribed for aching joints, weak knees, and the frailty of advancing age. Its seeds traveled the old trade routes tucked into countless formulas, valued as much for their reputation as a hair restorative as for their role in treating stubborn skin conditions. That long, layered history is exactly why modern science took a closer look, and exactly why modern caution is warranted today.

Growing guide

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Sun

Full sun; Babchi is a plant of open, sun-baked ground and flowers poorly in shade

Soil

Well-drained sandy or loamy soil; tolerates poor, gravelly ground but resents waterlogging

Water

Moderate watering while establishing, then fairly drought tolerant, needing only occasional deep watering through the growing season

Planting

Sown from seed after the danger of frost has passed, in warm soil; germinates readily in tropical and subtropical climates and is grown as a summer annual elsewhere

Fresh to dried

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Harvest

The small flat seed pods are gathered in autumn once they have matured and turned brown and papery on the stem

Drying

Pods are spread in a single layer and air or sun dried until brittle, then threshed to release the hard, dark seeds within

Storage

Dried seeds are kept whole in a tightly sealed, light-blocking container in a cool, dry place, where they remain stable for traditional use over many months

Best forms

Traditionally the whole dried seed, sometimes processed with salt water or ginger juice before use in classical Chinese medicine, always under experienced practitioner guidance

Pairs well with

✦Eucommia bark (Du Zhong)
✦Walnut kernel (Hu Tao Ren)
✦Cistanche

Substitutes

✦Epimedium (Horny Goat Weed)
✦Cuscuta seed (Dodder)

Choose it when

“The seed apothecaries of old India and China reached for when the skin lost its color and the years began to settle into the bones.”

Did you know?

The psoralen compounds first studied in Babchi seeds became the foundation of PUVA therapy, a light-based treatment still used in dermatology clinics today, where patients take a psoralen compound and are then exposed to controlled UVA light to treat vitiligo and psoriasis, a direct scientific echo of the plant's centuries-old traditional use.

Safety

Babchi seeds contain concentrated furanocoumarins that can cause severe burning, blistering, and lasting skin discoloration when exposed to sunlight after contact. Taken internally, it has been linked to serious liver injury in medical case reports, is considered unsafe in pregnancy, and may interact with other photosensitizing or liver-affecting medications. It should only be used under direct guidance from a licensed healthcare professional.