Muhlenbergia Capillaris 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 Muhlenbergia Capillaris Extract?

Muhlenbergia Capillaris Extract comes from the whole pink muhly grass plant, a member of the Poaceae family celebrated for its feathery rose colored plumes. When the plant is harvested its stalks, leaves and flowers are dried then soaked in a cosmetic grade solvent such as glycerin or ethanol. The liquid pulls out helpful compounds like plant sugars, lightweight oils, flavonoids and trace minerals. After filtering and concentrating the mixture formulators end up with a clear to amber fluid that blends easily into creams and gels.

Although pink muhly grass has long been prized for landscaping, its soothing feel on skin led Korean and American formulators to explore it for beauty products in the early 2000s. Today you will spot the extract in moisturizers, calming face masks, lightweight lotions, anti aging serums and even leave-on hair conditioners where it lends softness without heaviness.

Muhlenbergia Capillaris Extract’s Cosmetic Benefits/Uses

In skincare and haircare this botanical delivers two key functions that improve how a product feels and performs.

  • Skin conditioning: The natural sugars and flavonoids bind water to the skin surface helping it look smoother and more supple while also providing a mild soothing effect that can calm temporary redness
  • Emollient: Fine plant lipids fill in tiny gaps between skin cells creating a soft velvety finish and reducing transepidermal water loss which supports a healthier moisture barrier

Who Can Use Muhlenbergia Capillaris Extract

Muhlenbergia Capillaris Extract is gentle enough for most skin types including dry oily and combination skin because it delivers water-binding sugars alongside light plant oils that rarely clog pores. Sensitive skin usually tolerates it well thanks to its soothing flavonoids yet anyone with a known grass or pollen allergy should proceed with caution since the extract comes from a flowering grass.

The ingredient is plant derived with no animal by-products so it fits vegan and vegetarian lifestyles.

Pregnant or breastfeeding women are not known to face special risks from topical use of this extract however this is not medical advice and those individuals should clear any new skincare product with their physician.

Muhlenbergia Capillaris Extract does not increase photosensitivity so daytime use is fine with standard sun protection practices.

Potential Side Effects/Adverse Reactions

Responses to topical Muhlenbergia Capillaris Extract can differ from person to person. The following list covers potential though uncommon reactions assuming the product has been properly formulated and preserved

  • Mild redness or stinging in very sensitive skin
  • Itchy spots or hives if the user has an underlying grass allergy
  • Contact dermatitis triggered by other ingredients in the same formula reacting with the extract
  • Rare clogging of pores in individuals who are extremely prone to breakouts

If any of these effects occur discontinue use and consult a healthcare professional

Comedogenic Rating

Rating: 1 / 5

The extract carries only trace amounts of lightweight plant oils and contains mostly water-binding sugars plus soothing flavonoids. These molecules sit on the surface rather than seeping deep into pores so the chance of blockage is low. Finished products that use the extract in small percentages typically remain fluid or gel-like further reducing clogging risk, though very heavy creams that pair it with rich butters could tip the scale.

Overall Muhlenbergia Capillaris Extract is considered suitable for acne-prone or breakout-prone skin.

Keep in mind that the full formula and personal skin chemistry will ultimately decide how pore-friendly a product feels.

Summary

Muhlenbergia Capillaris Extract conditions skin by drawing in moisture with natural sugars and wrapping the surface in a thin layer of silky lipids that soften and smooth. These same properties make it a mild emollient that can shore up the skin barrier and leave hair feeling touchably soft. While not yet a mainstream superstar it is popping up more often in modern Korean moisturizers and niche calming serums thanks to its gentle profile and plant-based appeal.

Sensitivity issues are rare and the ingredient rates low on the comedogenic scale so most users can apply it without worry. As with any new cosmetic ingredient it is wise to patch test first to rule out individual allergies or reactions before using a product all over the face or body.

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