Leonurus Sibiricus Flower/Leaf/Stem Extract: What Is It, Cosmetic Uses, Benefits & Side Effects

Curious about this ingredient? In this article we're explaining exactly what it is and why it's used within cosmetic formulations.
Updated on: July 1, 2025
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We verify all information on this page using publicly available nomenclature standards from The Personal Care Products Council (PCPC), the European Commission's CosIng database and documentation provided directly by ingredient manufacturers. Our analysis is based on technical data from these sources to ensure accuracy and reliability.

What Is Leonurus Sibiricus Flower/Leaf/Stem Extract?

Leonurus Sibiricus Flower/Leaf/Stem Extract comes from the aerial parts of Leonurus sibiricus, a member of the mint family native to Siberia and parts of Asia. The plant is rich in naturally occurring compounds such as flavonoids, alkaloids, terpenoids and phenolic acids that give it a reputation for calming and comforting skin.

For centuries the herb has appeared in traditional topical remedies, prized for its ability to ease irritation. Modern formulators noticed these properties and began adding refined extracts to cosmetics aimed at sensitive or stressed skin.

Production starts with harvesting the flowers, leaves and stems, which are then dried and finely milled. The plant powder is soaked in a gentle solvent like water, glycerin or a water-alcohol blend to draw out the bioactive molecules. After filtration and concentration the liquid extract is standardized for consistency and safety before it is blended into finished products.

You will most often see Leonurus Sibiricus Flower/Leaf/Stem Extract in calming face masks, after sun lotions, redness reducing serums, soothing toners, barrier support creams and post-procedure gels.

Leonurus Sibiricus Flower/Leaf/Stem Extract’s Cosmetic Benefits/Uses

This ingredient is valued for one main job: soothing. By helping to quiet signs of discomfort such as tightness, redness and mild irritation, it supports a calmer complexion. Its gentle nature makes it a good companion to stronger actives like exfoliating acids or retinoids, as it can soften their potential sting. The extract also lends a feeling of relief in daily moisturizers and can boost the overall sense of comfort in products designed for reactive or delicate skin.

Who Can Use Leonurus Sibiricus Flower/Leaf/Stem Extract

Because it is first and foremost a soothing agent, this extract is generally well tolerated by every skin type, from oily to very dry. It shines for sensitive or reactive skin that flushes easily, yet is light enough not to weigh down combination or acne-prone complexions. There are no known reasons for people with mature or teenage skin to avoid it, and it carries a very low likelihood of clogging pores.

The ingredient is entirely plant derived, so it fits comfortably into vegan and vegetarian routines without any animal by-products or testing associated with the raw material itself.

Current research has not flagged topical Leonurus sibiricus as a concern for pregnancy or breastfeeding. Even so, data are limited, so this information is not medical advice and anyone expecting or nursing should clear new products with a qualified healthcare professional just to be safe.

The extract does not make skin more sensitive to sunlight, so there is no added risk of photosensitivity. It also plays well with most other skincare actives, including retinoids, exfoliating acids and vitamin C, often helping to temper the bite of stronger ingredients.

Potential Side Effects/Adverse Reactions

Responses to any botanical differ from person to person. The issues listed below are possible rather than probable, and most users will never experience them when the extract is included at appropriate levels in a well-formulated product.

  • Mild itching or tingling in very reactive skin
  • Transient redness immediately after application
  • Localised rash or hives in individuals allergic to the mint family
  • Contact dermatitis if combined with other irritants in the same formula

If any of these effects appear and persist, stop using the product and consult a healthcare professional

Comedogenic Rating

Rating: 0 (non-comedogenic)

Leonurus Sibiricus Flower/Leaf/Stem Extract is mostly composed of lightweight water-soluble molecules and contains virtually no heavy oils or waxes that could block pores, so it earns the lowest score on the comedogenic scale. The extract is therefore considered suitable for people who are prone to acne or frequent breakouts.

No notable data suggest it interferes with sebum flow or alters skin flora in a way that would trigger congestion, making it a safe choice even in leave-on products.

Summary

Leonurus Sibiricus Flower/Leaf/Stem Extract is prized for one core function: soothing skin. Packed with flavonoids, terpenoids and phenolic acids, it helps quiet redness and general discomfort while supporting the skin’s natural barrier. This calming action pairs well with stronger actives such as acids or retinoids, softening their potential side effects.

Although hardly a household name, the extract is gaining slow but steady popularity in gentle serums, masks and after sun formulas, especially within K-beauty and indie natural lines looking for plant-based comfort agents.

Topically it is regarded as very safe with a low risk of irritation or pore clogging, so most users can enjoy its benefits without worry. As with any new skincare ingredient, patch testing a small area first is the smartest way to rule out unexpected reactions.

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