Cocamidopropylamine Oxide
AKA “Coconut acid dimethylamino oxide, CDAO, Cocamidopropyl dimethylamine oxide
Surfactant
Ingredient Facts
Cocamidopropylamine oxide
AKA: Coconut acid dimethylamino oxide, CDAO, Cocamidopropyl dimethylamine oxide
Surfactant · Cleansing · EWG: 1
Synthetic
Cleanser
Skin Conditioner
Hair Care
Clean
Amides, coco, N-[3-(dimethylamino)propyl], N-oxides
CAS #
68155-09-9
Form
Powder
State
Solid
See origin →
Functions
Cleansing
Makes oil and water mix so dirt, makeup, and sunscreen can actually be washed away. The reason your face wash foams.
Hair Conditioning
A catch-all term for ingredients that improve how skin looks and feels — softer, smoother, more supple. The workhorse behind most moisturizers.
Cleansing
Makes oil and water mix so dirt, makeup, and sunscreen can actually be washed away. The reason your face wash foams.
Foam Boosting
Hydrotrope
Removes Impurities
Conditions Hair
Cleansing Surfactant
Boosts Lather
Locks In Moisture
Traditional Use
A coconut oil-derived amphoteric surfactant developed in the mid-20th century for use as a foam booster and mild cleanser in personal care formulations.
Skin Types
all-skin-types
Best For
General
Pregnancy & Breastfeeding Safe
Yes
Allergen Warning
⚠️ Tree Nut (Coconut)
EWG
1
CIR
Safe as used
Pregnancy
Yes
CIR Safety Findings
Not a Sensitizer
medical-approval
all-shades-safe
Regulatory Status
USApermitted
EUrestricted
JAPANrestricted
CANADArestricted
Verified Jun 2026
Data: CosIng · EWG · CIR