Hydrolyzed Cinnamomum Cassia Bark 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 27, 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 Hydrolyzed Cinnamomum Cassia Bark Extract?

Hydrolyzed Cinnamomum Cassia Bark Extract comes from the bark of the cassia cinnamon tree. After the bark is dried it is steeped in water or gentle solvents to draw out its aromatic compounds, then the extract goes through hydrolysis with acid or natural enzymes. This breaks large molecules into smaller water-soluble fragments that blend easily into modern skincare formulas. Chemically it holds lighter polysaccharides, phenolic antioxidants such as cinnamic acid, trace essential oils like cinnamaldehyde and several flavonoids.

Cinnamon has been valued in traditional beauty rituals for centuries thanks to its fragrant oil and skin warming feel. When cosmetic chemists learned that breaking the extract into smaller pieces improved its stability they adopted the hydrolyzed form for creams and serums starting in the late 1990s. Today you will spot it in clarifying toners, sheet masks, brightening or anti-aging serums, lightweight moisturizers, scalp tonics, natural deodorants and even rinse-off cleansers that aim for a fresh spa-like scent.

Hydrolyzed Cinnamomum Cassia Bark Extract’s Cosmetic Benefits/Uses

This plant active offers several useful roles in personal care formulas.

  • Antimicrobial: The extract helps curb growth of bacteria and fungi on both the skin surface and inside the product so it can support clearer complexions and extend shelf life naturally.
  • Antioxidant: Its phenolic compounds mop up free radicals generated by UV rays and pollution which can help slow the look of premature aging and keep oils in the formula from turning rancid.
  • Bleaching: In brightening products it can gently interfere with excess melanin formation leading to a more even skin tone and reduced appearance of dark spots over time.

Who Can Use Hydrolyzed Cinnamomum Cassia Bark Extract

This extract is generally suited to normal, combination and oily skin thanks to its lightweight water soluble nature and its ability to curb excess surface bacteria. Dry skin types can also use it when the formula pairs the extract with richer hydrators. Those with highly sensitive or reactive skin should proceed with caution because the trace cinnamon oils may provoke warmth or tingling, especially on compromised skin barriers.

The ingredient is plant derived, processed only with water, food grade solvents or enzymes so it aligns with vegan and vegetarian lifestyles.

Pregnant or breastfeeding users usually tolerate the tiny topical amounts found in cosmetics, yet this is not medical advice and anyone expecting or nursing should review all skincare products with a qualified healthcare professional for personalized guidance.

Hydrolyzed Cinnamomum Cassia Bark Extract is not known to cause photosensitivity and can be worn during daytime routines without increasing sun vulnerability. Pairing it with sunscreen is still recommended for overall skin health.

Potential Side Effects/Adverse Reactions

Responses to topical Hydrolyzed Cinnamomum Cassia Bark Extract differ from person to person. The effects listed below are only potential outcomes and most users will not notice any problems when the ingredient is used at standard cosmetic levels.

  • Skin irritation: Mild stinging or burning can occur, especially on freshly exfoliated or broken skin
  • Redness or flushing: The warming nature of cinnamon compounds may temporarily increase blood flow at the application site
  • Allergic contact dermatitis: People with known cinnamon allergies may experience rash, hives or swelling
  • Dryness or tightness: In rare cases the extract’s antimicrobial effect may disturb surface microbiota and lead to a feeling of dryness
  • Sensitization over time: Frequent use at high concentrations could heighten skin reactivity to the ingredient or related plant oils
  • Interaction with strong actives: Using it alongside high percentages of acids or retinoids may amplify irritation for some users

If any unexpected discomfort or persistent reaction develops discontinue use and consult a healthcare professional for further advice.

Comedogenic Rating

Rating: 1/5

Hydrolyzed Cinnamomum Cassia Bark Extract is water soluble and used at low percentages so it does not leave an occlusive film that could trap dead cells or sebum in pores. Its antimicrobial action may even help keep breakout-causing bacteria in check. Because the extract contains trace essential oils it is not completely risk free, but the tiny amounts present in finished formulas make blockage unlikely.

Overall this ingredient is considered safe for people who are prone to acne or congestion.

Formulas that pair the extract with heavy butters or silicones could change the overall pore-clogging potential so the full ingredient list still matters.

Summary

Hydrolyzed Cinnamomum Cassia Bark Extract delivers three key benefits: it suppresses microbial growth to support clearer skin, scavenges free radicals to defend against environmental stress and gently interferes with excess pigment development for a brighter look. These effects come from its phenolic acids, flavonoids and trace aromatic compounds that remain active after hydrolysis.

The extract is not a household name like vitamin C or hyaluronic acid yet its presence is rising in clean beauty and multi-tasking formulas that value natural preservation and subtle brightening.

At typical cosmetic levels it is regarded as low-risk, with irritation mostly limited to individuals sensitive to cinnamon. As with any new skincare product a simple patch test is a smart precaution before regular use.

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