Illicium Religiosum Branch/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 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 Illicium Religiosum Branch/Leaf Extract?

Illicium Religiosum Branch/Leaf Extract comes from the branches and leaves of Illicium religiosum, a small evergreen tree native to Japan that is sometimes called Japanese star anise. The plant material is naturally rich in phenolic acids, flavonoids and the well-known compound shikimic acid, all of which act as antioxidants. Traditionally the tree was valued for its fragrant foliage used in religious ceremonies; the same aromatic compounds later attracted the attention of cosmetic chemists looking for plant-based antioxidants.

To make the extract, freshly cut branches and leaves are cleaned, dried and milled into a fine plant powder. The powder is then soaked in a food-grade solvent such as glycerin or ethanol to pull the antioxidant molecules into solution. After several hours the mixture is filtered to remove solids, then concentrated and standardized so each batch delivers a consistent level of active compounds. The finished extract is water soluble, clear to light brown and easy to add at the cool-down phase of a formula.

You will most often see Illicium Religiosum Branch/Leaf Extract in wrinkle-fighting serums, day and night moisturizers, sheet masks, eye creams, brightening essences and even color cosmetics like foundations that claim long-term skin benefits. Some hair conditioners and scalp treatments also use it to help protect strands and the scalp surface from environmental stress.

Illicium Religiosum Branch/Leaf Extract’s Cosmetic Benefits/Uses

The ingredient is valued for one key action that supports healthy-looking skin.

As an antioxidant, Illicium Religiosum Branch/Leaf Extract helps neutralize free radicals created by UV exposure, pollution and everyday metabolism. By limiting oxidative stress it can reduce the look of premature aging such as dullness, uneven tone and fine lines. Antioxidant support also helps preserve the integrity of other delicate ingredients in a formula, improving overall product stability and shelf life.

Who Can Use Illicium Religiosum Branch/Leaf Extract

This antioxidant is considered gentle enough for most skin types, including dry, oily, combination and mature skin. Sensitive or highly reactive skin can usually tolerate it as well because it is water based and contains no known harsh acids or exfoliants, though anyone who is prone to botanical allergies should proceed cautiously.

The extract is 100 percent plant derived, so it is suitable for both vegans and vegetarians without reservation.

Current data do not indicate any specific risk for pregnant or breastfeeding women when the ingredient is used topically in cosmetic amounts. Still, research on this particular plant is limited and every pregnancy is unique, so this is not medical advice—expectant or nursing mothers should show the full ingredient list of any product they plan to use to their physician or midwife first.

Illicium Religiosum Branch/Leaf Extract is not known to cause photosensitivity. In fact its antioxidant action can complement daily sunscreen use by helping neutralize free radicals generated by UV light. No incompatibilities with common skincare actives have been reported.

Potential Side Effects/Adverse Reactions

Reactions to any topical ingredient vary from person to person. The effects listed below are possibilities only and, when the extract is properly formulated, most users will not experience them.

  • Mild redness or stinging in very sensitive or compromised skin, usually short lived
  • Allergic contact dermatitis in individuals already sensitized to Illicium species or related aromatic plants
  • Eye irritation if the product accidentally gets into the eyes, due to the extract’s natural aromatic compounds
  • Interaction with strong exfoliants or retinoids that may amplify overall skin irritation when multiple actives are layered too quickly

If any uncomfortable reaction occurs, stop using the product immediately and consult a qualified healthcare professional or dermatologist.

Comedogenic Rating

Rating: 0–1 (very low to non-comedogenic)

Illicium Religiosum Branch/Leaf Extract is a lightweight water-soluble ingredient rich in antioxidants and contains virtually no oils or waxes that could clog pores. Because it is typically added at low concentrations and has a thin texture, it does not create the kind of occlusive film that traps sebum inside pores. That is why formulators consider its pore-clogging risk negligible.

Suitable for acne-prone or breakout-prone skin.

As always, overall comedogenicity depends on the entire formula. If the product pairs this extract with heavy oils or butters the final pore-clogging potential could be higher.

Summary

Illicium Religiosum Branch/Leaf Extract serves mainly as an antioxidant that scavenges free radicals, helping protect skin from environmental stress and preserving other delicate ingredients within a formula. By limiting oxidative damage it supports a brighter, smoother and healthier-looking complexion.

The extract is still a niche botanical, so it is not as common as vitamin C or green tea yet it is slowly gaining attention among formulators who want plant-based alternatives.

Current evidence shows it is generally safe for most skin types with a very low likelihood of irritation or clogged pores when used at cosmetic levels. Even so, skin is individual so it is smart to patch test any new product that contains this or any other unfamiliar ingredient.

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