Cocamidopropyl Betaine — Allergy Risk & Safety Profile

Name: Is Cocamidopropyl Betaine Safe? Allergy Risk & Alternatives
Creator: SkinDetekt

INCI: COCAMIDOPROPYL BETAINE

Also known as: CAPB, Coco Betaine

🟡 Medium Risk

Key Facts

CAS Number: 61789-40-0
Category: surfactant
Risk Level: medium
Common Allergen: Yes
Found In: shampoo, body wash, facial cleanser

Is Cocamidopropyl Betaine safe in cosmetics?

Cocamidopropyl Betaine is rated medium risk in cosmetic products. It is a known allergen that can cause contact dermatitis in sensitized individuals. The allergy is often to impurities (amidoamine, DMAPA) rather than CAPB itself. Safer alternatives include Decyl Glucoside, Coco Glucoside, Sodium Cocoyl Isethionate. Commonly found in shampoo, body wash, facial cleanser.

What is Cocamidopropyl Betaine?

Gentle surfactant derived from coconut oil. Named ACDS Allergen of the Year in 2004.

Allergy & Safety Information

Cocamidopropyl Betaine is generally safe for most people but may cause irritation or allergic reactions in sensitive individuals. If you experience redness, itching, or swelling after using a product with this ingredient, discontinue use and consult a dermatologist.

This ingredient carries moderate allergenicity risk. It can cause reactions in sensitised individuals but has a lower sensitisation rate than high-risk ingredients. Patch testing before full use is advisable for anyone with a history of cosmetic reactions.

Allergen Note: The allergy is often to impurities (amidoamine, DMAPA) rather than CAPB itself.

About Surfactant / Cleansing Agent Ingredients

Surfactants reduce surface tension between water and oil, allowing products to cleanse, foam, and emulsify. They are essential in shampoos, cleansers, and body washes. However, surfactants vary widely in irritation potential — from harsh (sodium lauryl sulfate) to very mild (sodium lauroyl sarcosinate, decyl glucoside).

Relevance for Cocamidopropyl Betaine: Repeated daily use of strong surfactants disrupts the skin barrier by removing natural lipids, increasing sensitivity to other allergens over time. If you have reactive or eczema-prone skin, choosing low-irritation surfactants and limiting wash time reduces barrier damage.

How to Identify Cocamidopropyl Betaine in Products

Cosmetic ingredients are listed by their INCI (International Nomenclature of Cosmetic Ingredients) name in descending order of concentration. To check whether a product contains Cocamidopropyl Betaine, scan the ingredient list for its INCI name exactly as it appears above. Ingredients present at 1% or less may appear in any order after the 1% threshold.

Product types to prioritise checking: Shampoo, Body wash, Facial cleanser. These product categories are the most common sources of Cocamidopropyl Betaine exposure based on formulation data.

Not sure if your products contain Cocamidopropyl Betaine? Paste the ingredient list into the free ingredient checker to scan for Cocamidopropyl Betaine and other allergens automatically.