Cimicifuga Simplex 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: June 24, 2025
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All information on this page is verified using The Personal Care Products Council's (PCPC) INCI database. Our ingredient analyses are based exclusively on PCPC's technical data to ensure accuracy and reliability.

What Is Cimicifuga Simplex Leaf/Stem Extract?

Cimicifuga Simplex Leaf/Stem Extract comes from the leaves and stems of Cimicifuga simplex, a flowering plant also known as black cohosh or bugbane. While the roots of this plant have a long tradition in herbal remedies, the leafy parts only recently found their way into cosmetic labs. The extract is rich in moisture-binding sugars, soothing polyphenols and triterpene glycosides that help condition skin.

To make the ingredient, harvested leaves and stems are dried then soaked in water, glycerin or a water-alcohol mix. The liquid pulls out the active compounds, after which it is filtered and concentrated to create a stable fluid or powder ready for formulators.

Because of its gentle humectant and skin-conditioning profile, Cimicifuga Simplex Leaf/Stem Extract shows up in hydrating toners, facial mists, gel moisturizers, sheet masks, soothing after-sun lotions and many anti-aging serums that aim to keep skin supple.

Cimicifuga Simplex Leaf/Stem Extract’s Cosmetic Benefits/Uses

Formulators choose this botanical for two key reasons:

  • Humectant – draws water from the environment and deeper skin layers to the surface helping to maintain a healthy moisture balance and giving skin a plump refreshed feel
  • Skin Conditioning – deposits plant-based sugars and glycosides that soften rough patches support a smoother texture and leave the complexion feeling calm and comfortable

Who Can Use Cimicifuga Simplex Leaf/Stem Extract

This plant extract suits most skin types. Dry and normal skin benefit from its moisture-attracting sugars while combination and oily skin appreciate its lightweight feel that will not add greasiness. Sensitive skin generally tolerates it well thanks to its soothing polyphenols. No specific skin type is considered unsuitable unless a person has a known allergy to Cimicifuga species.

Because it is entirely plant derived the ingredient aligns with vegan and vegetarian lifestyles and is not processed with animal by-products.

Data on topical use during pregnancy or breastfeeding is limited. Although the leaves and stems hold far fewer phytoestrogenic compounds than the better-known root, anyone who is pregnant or nursing should ask a healthcare professional before adding new skincare just to stay on the safe side. This is not medical advice.

The extract does not increase photosensitivity and can be used in day or night routines. It mixes well with most common actives including niacinamide, hyaluronic acid and gentle exfoliating acids without known conflicts.

Potential Side Effects/Adverse Reactions

Responses to Cimicifuga Simplex Leaf/Stem Extract differ between individuals. The issues listed below are only potential outcomes and are unlikely for the average user when products are formulated correctly.

  • Mild redness or stinging on very reactive skin
  • Allergic contact dermatitis such as itching, rash or swelling in people sensitive to the Cimicifuga family
  • Rare hormonal-type flare in those with extreme sensitivity to plant phytoestrogens, although leaf and stem levels are minimal

If you notice any of the above while using the extract or a product containing it stop use and consult a healthcare professional.

Comedogenic Rating

Rating: 0 (non comedogenic). Cimicifuga Simplex Leaf/Stem Extract is a water based botanical rich in lightweight sugars and polyphenols without any heavy oils or waxes that could clog pores. Its molecules dissolve easily in water rather than sitting on the skin surface so it is highly unlikely to block follicles. This makes the extract suitable for people who are prone to acne or frequent breakouts.

The only caveat is that the finished product formula matters; if the extract is blended into an oily cream the overall product could still trigger congestion even though the extract itself does not. Always check the full ingredient list for other potential pore-cloggers.

Summary

Cimicifuga Simplex Leaf/Stem Extract acts mainly as a humectant and skin-conditioning agent. Its natural sugars pull moisture into the outer layers of skin while soothing polyphenols and triterpene glycosides smooth texture and leave skin feeling comfortable. Although not yet a household name it is gaining traction in hydrating toners, serums and masks thanks to its gentle plant origin and compatibility with many actives.

Topical use is considered very safe for most people with only rare reports of irritation or allergy. As with any new skincare ingredient it is wise to perform a small patch test when trying a product that contains it just to be on the safe side.

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