IngredientsPlant monograph · platycladus orientalis

Platycladus orientalis — leaves, flavonoids, and seventeen papers.

A long look at the highland pine whose leaf extract has accumulated a quietly consistent body of evidence for its effect on the scalp micro-environment.

Latin name: Platycladus orientalis (L.) Franco
Family / kind: Cupressaceae
Part used: Leaf
Key actives: Flavonoids · diterpenes · essential-oil fraction
Tradition: Recorded use in TCM since at least the Ming dynasty

image — Platycladus orientalis (L.) Franco source

Platycladus orientalis (L.) Franco

01chapter

The plant.

Platycladus orientalis is a small evergreen conifer native to eastern Asia, common on the dry, sun-exposed slopes of the Yunnan and Sichuan highlands between roughly 1,500 and 2,800 metres. It is a slow, dense tree, and its leaves — flattened, scaly, faintly resinous — are the part used in traditional preparation.

02chapter

What the leaf contains.

The leaf extract is dominated by a family of biflavonoids (notably amentoflavone, hinokiflavone, and their glycosides), a small diterpene acid fraction, and a low-percentage essential oil. The biflavonoids are the most studied; the essential oil contributes the scent and some of the local-circulation effect observed in older work.

03chapter

What the literature shows.

Across seventeen peer-reviewed studies spanning 1986 to 2024, the consistent finding is a modest but reproducible effect on the local microcirculation and on the inflammatory tone of the scalp. The effect size is small; the safety profile is long; the mechanism is plausible but not fully mapped. We treat it as a useful, gentle ingredient, not as a cure.

04chapter

How we use it.

Our extract is a 1:5 hydro-alcoholic preparation of air-dried highland leaves, standardised to a minimum biflavonoid content of 0.8%. We do not isolate individual molecules; we use the whole extract at a level that the older in-vivo work suggests is both effective and well-tolerated.

databy the numbers

What the evidence looks like.

peer-reviewed studies

spanning 1986–2024

largest clinical observation

n=120

24-week design

biflavonoid floor in our extract

0.8%

by HPLC

max. leave-on use level

in our formulas

q&afrequently asked

Questions we are often asked about platycladus.

Does platycladus help with hair loss?

There is consistent but modest evidence that the leaf extract supports the local micro-environment of the scalp — comfort, sebum balance, and microcirculation. There is no credible evidence that it regrows hair on its own. It is one of several ingredients we use to keep the scalp in the best condition we can.

Is it safe for sensitive scalps?

In the studies we have reviewed, the topical use of platycladus extract at 1–4% is well-tolerated. We patch-test every batch, and we publish the chromatogram of each lot. If you have a known allergy to Cupressaceae, please avoid.

Where do you source the leaves?

From a single cooperative of small farms in the Cangshan foothills, at altitudes between 2,000 and 2,600 m. The leaves are air-dried within 24 hours of harvest and shipped to us within a week.

references