Cyclopia Subternata 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: June 24, 2025
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All information on this page is verified using publicly available nomenclature standards and reference materials from The Personal Care Products Council (PCPC) and the European Commission's CosIng database. Our analyses are based on technical data from these sources to ensure accuracy and reliability.

What Is Cyclopia Subternata Flower/Leaf/Stem Extract?

Cyclopia Subternata Flower/Leaf/Stem Extract comes from the honeybush plant, a yellow-flowering shrub native to the coastal mountains of South Africa. Long enjoyed as a caffeine-free herbal tea, honeybush gained attention in skin care once researchers discovered its rich supply of polyphenols, flavonoids and xanthones. These natural compounds help neutralize the unstable molecules that age and irritate skin.

To create the cosmetic ingredient, harvested flowers, leaves and stems are dried then soaked in a water- or glycerin-based solvent. The liquid draws out the beneficial antioxidants and sugars which are then filtered and concentrated into a stable solution that blends easily into cosmetic bases.

Formulators add Cyclopia Subternata Flower/Leaf/Stem Extract to products that aim to calm, hydrate and protect the skin. You will most often see it in facial serums, daily moisturizers, anti-aging creams, sheet masks, soothing after-sun lotions and even gentle cleansers where an extra antioxidant boost is desired.

Cyclopia Subternata Flower/Leaf/Stem Extract’s Cosmetic Benefits/Uses

When included in a skin care formula, this multitasking plant extract offers several useful actions:

  • Antioxidant – Its polyphenols mop up free radicals generated by UV light and pollution helping to defend collagen and prevent the dullness linked with oxidative stress
  • Humectant – Natural sugars attract and bind water to the outer skin layers giving skin a plumper smoother look and supporting a comfortable moisture balance
  • Skin Conditioning – Soothing plant compounds soften rough spots and support a healthy skin barrier which can reduce the appearance of redness and promote an even-toned complexion

Who Can Use Cyclopia Subternata Flower/Leaf/Stem Extract

This gentle plant extract suits most skin types including dry, oily, sensitive or mature skin since it hydrates without leaving a greasy film and its antioxidants are non-irritating. Extremely reactive skin may still wish to start with lower concentrations as a precaution because every complexion is unique.

Because the ingredient is entirely derived from a shrub and no animal-derived solvents are required during standard extraction, it is considered suitable for both vegans and vegetarians. Always check the full product label in case other components are not plant-based.

There is no evidence that topical Cyclopia Subternata Flower/Leaf/Stem Extract poses a special risk to women who are pregnant or breastfeeding. Systemic absorption is minimal and it is caffeine-free. Still, this is not medical advice and anyone who is expecting or nursing should run all skincare products past a doctor just to be safe.

The extract does not increase photosensitivity. In fact its flavonoids can help shield skin from UV-generated free radicals, though it is never a substitute for sunscreen. No other notable usage restrictions are reported.

Potential Side Effects/Adverse Reactions

Individual responses to topical Cyclopia Subternata Flower/Leaf/Stem Extract can vary. The points below cover potential though uncommon reactions assuming the product has been formulated and stored correctly and is being used as directed.

  • Mild redness or warmth immediately after application, usually subsiding within minutes
  • Itching or stinging on very sensitive or compromised skin
  • Allergic contact dermatitis in those allergic to Fabaceae family plants
  • Interaction with high-dose exfoliating acids or retinoids leading to temporary dryness if layered too quickly

If any discomfort persists discontinue use and seek advice from a healthcare professional or dermatologist.

Comedogenic Rating

Rating: 0 / 5

Cyclopia Subternata Flower/Leaf/Stem Extract is supplied as a water or glycerin solution with no heavy oils or waxes so it does not clog pores. Its small polyphenol and sugar molecules are readily dissolved and leave no occlusive residue that might trap sebum or dead cells. For this reason it is considered non-comedogenic and is generally well suited to skin that is prone to acne or breakouts.

Bear in mind that the overall pore-clogging potential of a finished product depends on the full formula. If a cream containing the extract is built on rich butters or silicones the rating of those materials will dominate.

Summary

Cyclopia Subternata Flower/Leaf/Stem Extract acts as an antioxidant by donating electrons that neutralize free radicals, as a humectant by pulling moisture from the environment into the upper layers of skin, and as a skin-conditioning agent that soothes and helps maintain a resilient barrier. These benefits stem from its natural mix of flavonoids, xanthones and plant sugars.

The ingredient is still something of a niche player compared with green tea or vitamin C yet its gentle performance and eco-friendly profile are making it pop up in more serums masks and light lotions.

Current data show it is safe for topical use with low irritation risk or sensitization, though anyone introducing a new product should perform a quick patch test to confirm personal compatibility.

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