C20-24 Alkyl Dimethicone
AKA: Silicone, Alkyl Silicone
Synthetic
Skin Conditioner
Silicone
Clean
Siloxanes and Silicones, C20-24 alkyl methyl, dimethyl
CAS #
200074-76-6
Form
Liquid
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.
Viscosity Controlling
Locks in moisture
Traditional Use
Developed in the late 20th century as a silicone derivative for cosmetics. Used to create smooth textures and improve spreadability in skincare and makeup formulations.
EWG
2
CIR
Safe as used
Pregnancy
Yes
Restricted By
CIR Safety Findings
Not a Sensitizer
ewg-2
medical-approval
pregnancy-nursing-safe
all-shades-safe
Regulatory Agencies
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