Capryloyl Silk Amino Acids
AKA “Capryloyl Silk Peptides, Acylated Silk Proteins
Acid
Ingredient Facts
Capryloyl silk amino acids
AKA: Capryloyl Silk Peptides, Acylated Silk Proteins
Acid · Cleansing · EWG: 4
Synthetic
Cleanser
Skin Conditioner
Hair Care
Amino Acid
Acid
Not Clean
Amino acids, silk, raction products with octanoyl chloride
CAS #
227200-38-6
Form
Powder
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.
Removes Impurities
Conditions Hair
Cleansing Surfactant
Fights Bacteria
Reduces Inflammation
Locks In Moisture
Removes dirt and impurities
Lifts away dirt and oil
Softens and detangles hair
Traditional Use
A contemporary cosmetic ingredient combining caprylic acid with amino acids derived from silk protein. Developed to provide luxurious conditioning and improved skin feel in premium skincare formulations.
Skin Types
all-skin-types
Best For
Rough Texture
Pregnancy & Breastfeeding Safe
Yes
EWG
4
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