Catalpa Bignonioides Leaf 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 Catalpa Bignonioides Leaf Extract?

Catalpa Bignonioides Leaf Extract is a plant-derived ingredient that comes from the large heart-shaped leaves of the southern catalpa tree, a member of the Bignoniaceae family native to the southeastern United States. The leaves are naturally rich in soothing sugars, polyphenols and small amounts of amino acids that help them hold moisture and defend against environmental stress. Traditional folk remedies once relied on catalpa leaves to calm minor skin irritations, which piqued the interest of modern formulators looking for gentle botanical alternatives.

To create the extract, freshly harvested leaves are cleaned, dried and finely milled, then soaked in a skin-friendly solvent such as water and glycerin. The resulting liquid is filtered to remove solids and standardized so chemists can work with a consistent concentration. Because the process takes place at moderate temperatures, most of the leaf’s beneficial compounds stay intact.

You will most often spot Catalpa Bignonioides Leaf Extract in moisturizers, calming face masks, lightweight lotions, after-sun gels and anti-aging serums where a touch of plant comfort is desired.

Catalpa Bignonioides Leaf Extract’s Cosmetic Benefits/Uses

This leaf-based ingredient plays a supportive yet valuable role in many formulas.

Skin conditioning: The natural sugars and polyphenols help draw in water, soften rough patches and leave skin feeling smoother. They also create a light protective film that can make the surface look more supple and fresh which is why the extract appears in products aimed at boosting daily hydration and soothing mild redness.

Who Can Use Catalpa Bignonioides Leaf Extract

This gentle plant extract is generally suitable for all skin types including dry, normal, combination and oily. Its humectant sugars add light hydration without leaving a heavy residue so even acne-prone or sensitive skin usually tolerates it well. Those with extremely reactive or allergy-prone skin should still review the full ingredient list of a product, as irritation is more often linked to other additives rather than the catalpa leaf itself.

Catalpa Bignonioides Leaf Extract is entirely plant derived which makes it appropriate for both vegetarians and vegans. The extraction process relies on water or glycerin sourced from plants so no animal by-products come into play.

Current research shows no specific hormonal or systemic concerns for pregnant or breastfeeding women when the ingredient is used topically. That said this is not medical advice and anyone who is pregnant or nursing should ask a healthcare professional to look over any skincare routine for added peace of mind.

The extract is not known to cause photosensitivity so daytime use does not increase sunburn risk. Normal daily sunscreen habits are still recommended for overall skin health.

Potential Side Effects/Adverse Reactions

Responses to topical Catalpa Bignonioides Leaf Extract vary from person to person. The points below outline potential but uncommon side effects. When the ingredient is included at typical cosmetic levels most users will not notice any of these issues.

  • Mild redness or stinging
  • Localized itching in extremely sensitive individuals
  • Allergic contact dermatitis in those allergic to plants in the Bignoniaceae family
  • Interaction with other actives: very high concentrations of exfoliating acids or retinoids may amplify sensitivity though this is rare

If any irritation or other adverse reaction develops discontinue use and consult a medical professional if symptoms persist.

Comedogenic Rating

Rating: 0/5. Catalpa Bignonioides Leaf Extract is water based and composed mostly of lightweight humectant sugars and polyphenols rather than oils or waxes that can clog pores. Its molecules sit on the skin surface, attract moisture then rinse away easily which keeps pore blockage risk extremely low. Suitable for acne-prone or breakout-prone skin.

As with any ingredient, the overall formula counts more than a single component. Heavy butters, occlusive silicones or fragrance in the same product could raise the pore-clogging potential even if the catalpa leaf itself is non-comedogenic.

Summary

Catalpa Bignonioides Leaf Extract is mainly used for skin conditioning. Its natural sugars draw in water to boost hydration, while its polyphenols form a light comforting film that helps smooth and soften the skin. A touch of amino acids offers an extra soothing benefit.

Although effective, the extract is still a niche botanical rather than a headline star so you will spot it in a handful of hydrating lotions, calming masks and gentle serums rather than across every shelf.

Safety studies and practical experience show it is well tolerated by most skin types with a very low risk of irritation or pore congestion. Even so, it is always wise to do a quick patch test when you try any new product that contains this or any other unfamiliar ingredient.

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