Myristamidopropyl Hydroxysultaine

AKA: Obazolin MHS-121, ASB 14O, 1-Propanaminium, 2-hydroxy-N, Inner salt, 63663-10-5, MYRISTAMIDOPROPYL HYDROXYSULTAINE [INCI]
Synthetic
Cleanser
Skin Conditioner
Hair Care
Plant Oil
Not Clean
2-Hydroxy-3-sulphonatopropyldimethyl[3-[(1-oxo-tetradecanyl)amino]propyl]ammonium
Formula
C22H46N2O5S
Mol. Weight
450.70
CAS #
63663-10-5
Form
Powder
Functions
Antistatic
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.
Skin Conditioning
A catch-all term for ingredients that improve how skin looks and feels — softer, smoother, more supple. The workhorse behind most moisturizers.
Foam Boosting
Viscosity Controlling
Locks in moisture
Traditional Use
Synthetic amphoteric surfactant derived from myristic acid, developed in the late 20th century for use in mild personal care cleansers; no traditional use.
EWG
4
CIR
Safe as used
Pregnancy
Yes
CIR Safety Findings
Not a Sensitizer
medical-approval
all-shades-safe
Regulatory Status
USApermitted
CANADApermitted
Regulatory Agencies
Skin Types
all-skin-types
Best For
General
Pregnancy & Breastfeeding Safe
Yes
The paper trail
🔬Peer-reviewednone on file
⚖️Regulatory1 listing
🛡️Safety-assessed2 reviews
Counts, not a verdict. A listing isn't a study. The trail, you decide.
Verified Jun 2026
Data: PubChem · CosIng · EWG · CIR