C30-45 Alkyl Cetearyl Dimethicone Crosspolymer

C30-45 Alkyl Cetearyl Dimethicone Crosspolymer 1
C30-45 Alkyl Cetearyl Dimethicone Crosspolymer 2
C30-45 Alkyl Cetearyl Dimethicone Crosspolymer 3
C30-45 Alkyl Cetearyl Dimethicone Crosspolymer 4
AKA: Silicone Crosspolymer
Plant-Derived
Emollient
Occlusive
Skin Conditioner
Hair Care
Silicone
Clean
C30-45 Alkyl Cetearyl Dimethicone Crosspolymer is a copolymer of C30-45 alkyl cetearyl dimethicone crosslinked with vinyl cyclohexene oxide
CAS #
443892-05-5
Form
Liquid
Functions
Film Forming
Creates a physical seal on skin to lock moisture in and keep irritants out. The "slugging" ingredient — barrier protection.
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.
Emollient
Fills in the tiny cracks between skin cells to make everything feel smooth and soft. The "silky finish" ingredient.
Locks In Moisture
Traditional Use
A cross-linked silicone polymer developed for modern cosmetics. Designed to improve gel-like textures and provide stability in emulsified systems.
EWG
2
CIR
Safe as used
Pregnancy
Yes
CIR Safety Findings
Not a Sensitizer
ewg-2
medical-approval
pregnancy-nursing-safe
all-shades-safe
Regulatory Status
USA✔ permitted
EU⚠ restricted
JAPAN⚠ restricted
CANADA⚠ restricted
Skin Types
●all-skin-types, gentle
Best For
Dryness
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: CosIng · EWG · CIR