Ingredient review
Cinnamal
INCI: Cinnamal
Cinnamal is a common fragrance allergen that can cause skin irritation and allergic reactions, especially in sensitive individuals.
In plain English
Cinnamal is a natural chemical that gives cinnamon its distinctive smell and taste. In skincare and beauty products, it's added as a fragrance ingredient. However, it's also a well-known skin sensitizer, meaning it can cause allergic reactions like redness, itching, or swelling in some people. Because of this, it's often listed on ingredient labels and is one of the allergens that the European Union requires to be labeled separately when present above certain levels.
Review score
Safety, usefulness, and evidence
Useful in the right context, but not low-maintenance
The evidence base is relatively strong for its common cosmetic role.
Main practical flags: irritation is high; clogging risk is low.
- Source
- natural
- Evidence
- strong
- Irritation
- high
- Clogging risk
- low
Quick decision guide
Read the cautions before using
Cinnamal can be useful, but watch for high irritation potential.
Plain-English read
Treat this as a practical screening step before you compare products that contain this ingredient.
- Step 1Start with the score, then check the irritation and clogging risk before judging Cinnamal.
- Step 2Use the "Best for" and "Use caution if" sections to match the ingredient to your skin, not just to a marketing claim.
- Step 3If a product stings, breaks you out, or worsens irritation, judge the finished formula and stop using it even if the ingredient scores well.
Score terms in plain English
Irritation risk
highMore likely to cause dryness, stinging, peeling, or reactivity if used too aggressively.
Clogging risk
lowLess likely to feel heavy or contribute to clogged pores for most skin types.
Evidence level
strongThere is a stronger practical or research basis for the ingredient role described here.
What it is
Cinnamal is an organic compound found naturally in cinnamon bark oil. It's responsible for the characteristic warm, spicy aroma of cinnamon and is used as a fragrance ingredient in many cosmetic and personal care products.
How it works
In a cosmetic product, cinnamal functions solely as a fragrance component. It does not provide any skincare benefits like moisturizing or anti-aging. When applied to the skin, it can be absorbed and may trigger an immune response in sensitive individuals, leading to contact dermatitis.
Pros
Natural origin
Derived from cinnamon bark, a natural source, which may appeal to consumers seeking naturally-derived ingredients.
Pleasant scent
Provides a warm, familiar cinnamon fragrance that many people find appealing in seasonal or everyday products.
Cons and cautions
High allergen risk
Cinnamal is one of the most common fragrance allergens, and even low concentrations can trigger contact dermatitis in sensitive individuals.
No skincare benefit
It serves only as a fragrance and offers no moisturizing, anti-aging, or other functional skincare benefits.
Best for
- Individuals who do not have sensitive skin or known fragrance allergies
- Those who enjoy cinnamon-scented products and have no history of reactions
Use caution if
- People with sensitive skin, eczema, or known fragrance allergies
- Anyone who has had a previous allergic reaction to cinnamon or cinnamal
Usage tips
Safety summary
Cinnamal is considered safe for use in cosmetics at low concentrations for most people, but it is a well-established skin sensitizer. Individuals with sensitive skin or fragrance allergies should avoid products containing it to prevent allergic reactions.
Research notes
Multiple studies and regulatory reviews confirm that cinnamal is a common contact allergen. The Scientific Committee on Consumer Safety (SCCS) has established safe use levels, but it remains a frequent cause of allergic contact dermatitis in patch test populations.
Common label clues
- Typical concentration
- Typically used at very low levels, often below 0.1% in leave-on products
- Regulatory status
- In the European Union, cinnamal must be listed on the ingredient label when present above 0.001% in leave-on products and 0.01% in rinse-off products, due to its allergenic potential. In the US, it is not individually restricted but is subject to general safety requirements.
- Common uses
- Fragranced lotions, Perfumes, Lip products, Soaps
- Environmental note
- Cinnamal is typically extracted from cinnamon bark, a renewable resource. However, large-scale production may have environmental impacts related to farming and processing.
Good to know
- Cinnamal is one of 26 fragrance allergens that must be labeled individually in the EU when present above 0.001% in leave-on products.
- It can also be found naturally in some essential oils like cinnamon leaf and cassia oil.
Common questions
What is Cinnamal in beauty products?
Cinnamal is a natural chemical that gives cinnamon its distinctive smell and taste. In skincare and beauty products, it's added as a fragrance ingredient. However, it's also a well-known skin sensitizer, meaning it can cause allergic reactions like redness, itching, or swelling in some people. Because of this, it's often listed on ingredient labels and is one of the allergens that the European Union requires to be labeled separately when present above certain levels.
What does Cinnamal do in a beauty product?
In a cosmetic product, cinnamal functions solely as a fragrance component. It does not provide any skincare benefits like moisturizing or anti-aging. When applied to the skin, it can be absorbed and may trigger an immune response in sensitive individuals, leading to contact dermatitis.
Is Cinnamal safe for most people?
Cinnamal is considered safe for use in cosmetics at low concentrations for most people, but it is a well-established skin sensitizer. Individuals with sensitive skin or fragrance allergies should avoid products containing it to prevent allergic reactions.
Who should be careful with Cinnamal?
People with sensitive skin, eczema, or known fragrance allergies Anyone who has had a previous allergic reaction to cinnamon or cinnamal
Research sources
Ingredient reviews are educational and are not medical advice. Patch test new products and ask a licensed clinician about persistent irritation, allergies, pregnancy-specific questions, or diagnosed skin conditions.