- Derived from: coconut
- Pronunciation: (Coca mydo \ˈprō-pəl\ \ˈbē-tə-ˌēn\)
- Type: Naturally-derived
- Other names: CAPB
What Is Cocamidopropyl Betaine?
Cocamidopropyl betaine (CAPB) is a fatty acid derived from coconut oil. It is widely considered to be an excellent renewable substitute for surfactants.
The Cocamidopropyl Betaine Production Process
Cocamidopropyl betaine manufacturing typically requires two steps: First, coconut oil (or coconut fatty acids) are reacted with dimethylaminopropylamine, which results in a predominant lauric acid makeup. Next, this solution is reacted with sodium monochloroacetate.
Cocamidopropyl Betaine Uses
Cocamidopropyl betaine is growing in popularity in personal care products, from liquid soaps to body washes to shampoos. CAPB is commonly used as an anti-static agent and sulfate-free surfactant in products such as surface cleaners, dish soaps, and liquid detergents. [4,5]
Why Puracy Uses Cocamidopropyl Betaine
We use cocamidopropyl betaine as a cleansing agent in both of our natural laundry detergents as well as our Natural Pet Shampoo. An excellent stain removing agent, it is also fully rinsed away during a normal washing machine cycle.
Is Cocamidopropyl Betaine Safe?
Due to rare dermatological reactions[4,8], we do not use cocamidopropyl betaine in formulations that come directly into contact with human skin. However, studies show that contact dermatitis occurs due to impurities occurring from lower-quality manufacturing: 3-dimethylaminopropylamine (DMAPA) and aminoamide. [5,7]
Note: Higher-grade CAPB – like the one used by Puracy – rarely contains these impurities.
Whole Foods has deemed the ingredient acceptable in its cleaning products quality standards as a surfactant.. Further research shows the ingredient is not a skin irritant or sensitizer when used in solutions below 1%.[8,9,10]
 Gholami A, Golestaneh M, Andalib Z. A new method for determination of cocamidopropyl betaine synthesized from coconut oil through spectral shift of Eriochrome Black T. Spectrochim Acta A Mol Biomol Spectrosc. 2018 Mar 5;192:122-127. doi: 10.1016/j.saa.2017.11.007. Epub 2017 Nov 10. PMID: 29128745.
 Human and Environmental Risk Assessment
 Jacob SE, Amini S. Cocamidopropyl betaine. Dermatitis. 2008 May-Jun;19(3):157-60. PMID: 18627690.
 Whole Foods Body Care Ingredients Standards
 Environmental Working Group
 Schnuch, Al, et al., “Is cocamidopropyl betaine a contact allergen? Analysis of network data and short review of the literature.” Contact Dermatitis. 2011 Apr;64(4):203-11
 Corazza, M., et al., “Irritant and sensitizing potential of eight surfactants commonly used in skin cleansers: an evaluation of 105 patients.” Dermatitis 2010 Sep-Oct;21(5):262-8
 McFadden, J.P., et al., “Clinical allergy to cocamidopropyl betaine: reactivity to cocamidopropylamine and lack of reactivity to 3-dimethylaminopropylamine.” Contact Dermatitis 2001 Aug;45(2):72-4