C14-28 Isoalkyl Acid
AKA “Isoalkyl Acid, Branched Fatty Acid
Synthetic
Ingredient Facts
C14-28 isoalkyl acid
AKA: Branched Fatty Acid
Synthetic · Emollient · EWG: 1
Synthetic
Emollient
Skin Conditioner
Hair Care
Synthetic
Clean
C14-28 Isoalkyl Acid is a mixture of branched chain, saturated fatty acids containing 14 to 28 carbons in the alkyl chain Science: Functions: Hair Conditioning Safety Ratings: CIR: Safe as used
Form
Liquid
State
Solid
See origin →
Functions
Skin Conditioning
A catch-all term for ingredients that improve how skin looks and feels — softer, smoother, more supple. The workhorse behind most moisturizers.
Emollient
Fills in the tiny cracks between skin cells to make everything feel smooth and soft. The "silky finish" ingredient.
Hair Conditioning
A catch-all term for ingredients that improve how skin looks and feels — softer, smoother, more supple. The workhorse behind most moisturizers.
Conditions Hair
Softens and detangles hair
Traditional Use
A synthetic branched fatty acid created in the 20th century for use in cosmetic emulsions and conditioning products. Has no traditional or historical use.
Skin Types
all-skin-types, gentle
Best For
Dryness
Melanin-Rich Skin
Suitable
Pregnancy & Breastfeeding Safe
Yes
EWG
1
CIR
Insufficient
Pregnancy
Yes
CIR Safety Findings
Not a Sensitizer
ewg-1
medical-approval
pregnancy-nursing-safe
all-shades-safe
Regulatory Status
USAunder review
EUrestricted
JAPANrestricted
CANADArestricted
Verified Feb 2026
Data: CosIng · EWG · CIR
C14-28 Isoalkyl Acid — Duck Heart Ghost