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Herb library · Entry 15 of 40

St John's Wort

Hypericum perforatum · Hypericaceae
In one paragraph

St John's Wort takes its common name from its flowering season, traditionally gathered near St John's Day in late June, and its species name, perforatum, from the tiny translucent oil glands dotting its leaves — hold one up to the light and it looks pierced with pinholes. Those glands are full of hypericin, the pigment that turns a fresh infusion deep red. It is for unbroken skin only, and it is the one oil in the range that comes with a genuine sun-sensitivity caution.

How Nurtur Health infuses it

Flowering tops are wild-harvested by hand in the Muskoka region at the point in the season when the plant is at its strongest, then infused whole — not steam-distilled — in organic olive oil using the same alcohol-intermediary method as the rest of the range. The colour is entirely the plant: hypericin is fat-soluble, so it moves into the oil over the six-week maceration and turns it a deep, wine-red.

Traditional use

Topically, St John's Wort has a long folk history as a massage oil for overworked, sore and tense muscles, and for skin that has taken a knock — bruises, minor sprains, tension held in the shoulders and back. Because the whole flowering top infuses into the oil rather than being distilled into an essential oil, what results is a gentle, skin-ready extract rather than a concentrated one — the same distinction that separates every infused oil in this range from an essential oil.

Cautions — read before use
May increase skin's sensitivity to sunlight. Avoid direct sun on treated skin, and keep the oil itself away from light.
External use only. Never on open cuts, broken skin or puncture wounds.
Speak with a qualified practitioner before use in pregnancy, while nursing, on children, or alongside medication.

St John's Wort compared

Plant
Character
Reach for it when
St John's Wort
Deep red, warming
Muscles ache or feel tense
Goldenrod
Golden, arnica-like
Muscles are sore from overuse
Balsam fir
Resinous, forest-green
Muscles are tight after activity
St John's Wort infused oil, deep wine-red
St John's Wort infused in organic olive oil, six weeks. The red is hypericin — nothing added, nothing dyed.
Products containing St John's Wort
Sources
Kress, H. Practical Herbs — Hypericum perforatum monograph.
Herbal Academy, Materia Medica: Hypericum perforatum.
Health Canada, Cosmetic Ingredient Hotlist — photosensitizing botanicals.

Written and reviewed by Olga, Herbal Academy graduate and founder of Nurtur Health. Last updated 25 August 2026.