Cinnamomum Cassia Leaf Oil (Ingredient Explained +

Oil is a hydrophobic (water-repelling) substance that can help regulate sebum production in skincare.

Essential oils are concentrated plant extracts used to give products a natural scent and sometimes offer plant-based benefits. They're a common source of fragrance-related irritation and allergic reactions, especially for sensitive or compromised skin.

Fragrances make products smell appealing but are a common cause of skin irritation and allergic reactions. This includes synthetic fragrances, natural fragrances, and essential oils. Fragrance-free products are the safest bet for sensitive skin.

May cause Irritation

Some ingredients have higher irritation potential, particularly for sensitive skin. Common reactions include redness, burning, or itching. If you have sensitive skin, patch test first and introduce these ingredients slowly into your routine.

Can worsen Perioral Dermatitis

Some ingredients are known to be potential triggers for perioral dermatitis. However, triggers vary greatly between individuals. Keep a diary to identify your personal triggers and work with a dermatologist to develop a gentle, effective routine.

Can worsen Psoriasis

Some ingredients are known to be potential triggers for psoriasis. However, triggers vary greatly between individuals. Keep a diary to identify your personal triggers and work with a dermatologist to develop a gentle, effective routine.

Some ingredients are known to be potential triggers for rosacea. However, triggers vary greatly between individuals. Keep a diary to identify your personal triggers and work with a dermatologist to develop a gentle, effective routine.

Some ingredients are especially likely to irritate the thinner, more sensitive skin on the lips. Counter-irritants used in plumpers, fragrance allergens, and leave-on chemical exfoliants are common triggers. Reactions can include stinging, redness, dryness, or contact cheilitis. If your lips react easily, look for fragrance-free, occlusive balms without active acids or warming agents.

A list of the most-known allergic substances from the European Union's Cosmetics Regulation 1223/2009.

This type of cinnamon tree comes from southern China. It is used to add a cinnamon scent to products.

What it does

Masking Obscuring or blocking

Perfuming A substance that emits and diffuses a fragrant odor, especially a volatile liquid distilled from flowers or preparedsynthetically.

Prevalence

Less common Percentage of products that contain it

Top categories

Cleansers

Treatments

Sunscreens

Position Predominant list placement

Bottom 25%

Cinnamomum Cassia Leaf Oil

Explained

What it does

Prevalence

CosIng Data