Recipe
Comfrey leaf oil (external only)
- Herb:
- Comfrey Symphytum officinale
- Method:
- Herbal oil
- Plant part:
- Leaf
About 40 minAdvancedRecipe science profile
Procedure
- Chop dried leaf and fill a jar about one third full, then cover with olive or sunflower oil.
- Macerate 4–6 weeks in a warm shady place, then strain through cloth.
- Use on intact skin only after a patch test on the inner forearm — do not consume; pyrrolizidine alkaloids are risky with internal exposure.
Extraction
- Herb:
- proportions according to the recipe steps on the card
- Solvent:
- medium composition (water, alcohol, oil, honey…) see the individual steps
- Shelf life:
- after preparation, store hygienically and according to the type of product (cool conditions, light, alcohol)
- Target compounds:
- indicative home extraction — the profile depends on temperature, cutting time and proportions
Notes
EMA-style texts discuss comfrey root for traditional short-term external adult use; treat leaf cautiously and only externally — see the herb card.
Why it works
Regulatory texts often address comfrey root for traditional short-term external adult use; leaf material is less standardised and pyrrolizidine alkaloids are a documented concern for internal exposure. A home macerated oil is a variable extract for unbroken skin only — not equivalent to assessed herbal medicines.
Related
Comfrey — Herb card
Herbal oil — Processing method detail