Quercus Aegilops Cupule 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 30, 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 Quercus Aegilops Cupule Extract?

Quercus Aegilops Cupule Extract is derived from the cupules, or acorn caps, of Quercus aegilops, a type of oak tree native to the Mediterranean region. These sturdy caps are rich in natural tannins, flavonoids, and sugars that give the extract its skin friendly properties. Historically, oak parts were valued in folk care for their soothing effect on skin irritations. Modern cosmetic science isolated the cupule component because it contains a balanced mix of polyphenols that help support the skin’s surface. Production begins with sustainably collected acorn caps that are dried, finely milled, and soaked in a gentle solvent such as glycerin or water. The liquid is then filtered and concentrated to create a stable, skin compatible extract. You will most often see Quercus Aegilops Cupule Extract in moisturizers, calming masks, hydrating toners, and serum style treatments aimed at maintaining soft, comfortable skin.

Quercus Aegilops Cupule Extract’s Cosmetic Benefits/Uses

This ingredient is prized for one key role in skincare formulas.

Skin conditioning: The natural tannins and sugars form a light film on the surface that helps retain moisture and leave skin feeling smooth and refreshed. By supporting the skin’s barrier, the extract can enhance softness, reduce the look of dryness, and promote an overall healthier appearance, making it a useful addition to daily hydrators and soothing products.

Who Can Use Quercus Aegilops Cupule Extract

This extract suits most skin types, including normal, dry, combination and oily skin because its light film-forming action hydrates without feeling heavy. Sensitive skin generally tolerates it as the tannin content is balanced, yet those with very reactive or eczema-prone skin may want to monitor how their skin feels since any botanical can be an irritant for some individuals.

The ingredient is plant derived and involves no animal by-products, making it appropriate for vegans and vegetarians.

Current research shows no specific issues for pregnant or breastfeeding women when the extract is applied topically in cosmetic concentrations. That said this is not medical advice and anyone who is pregnant or nursing should confirm product choices with a healthcare professional to be safe.

Quercus Aegilops Cupule Extract is not known to increase photosensitivity, so standard daytime use paired with a daily sunscreen is sufficient. No other notable limitations are recorded at this time.

Potential Side Effects/Adverse Reactions

Responses to topical Quercus Aegilops Cupule Extract differ from person to person. The following list covers potential side effects, though most people will not experience them when the ingredient is used correctly in a well-formulated product.

  • Redness or mild stinging on sensitive skin
  • Dry or tight feeling if overused on already dehydrated skin
  • Rare allergic contact dermatitis presenting as itching or rash

If any discomfort, persistent irritation or rash occurs, discontinue use and seek advice from a qualified healthcare provider.

Comedogenic Rating

Rating: 1 (very low)

Quercus Aegilops Cupule Extract is water soluble and contains mostly polyphenols and sugars rather than heavy waxes or oils, so it does not readily clog pores. Its light film-forming action sits on the skin’s surface without blocking follicles, earning it a low score of 1.

Suitable for acne-prone or breakout-prone skin in most cases.

Keep in mind that the overall formula matters; if the extract is blended into a rich cream packed with occlusive oils the final product could still be pore clogging even though the extract itself is not.

Summary

Quercus Aegilops Cupule Extract is primarily a skin-conditioning agent that smooths, softens and supports the moisture barrier through its natural tannins and sugars. These compounds create a delicate film that helps retain water and leaves the complexion comfortable and refreshed.

At the moment it is a niche ingredient seen in select moisturizers, toners and calming masks rather than a mainstream staple, yet formulators appreciate its gentle plant origin and balanced performance.

Overall safety is high with few reported reactions when used at cosmetic levels. As with any new skincare ingredient it is wise to patch test a product first to rule out personal sensitivity.

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