C20-24 Alkyl Dimethicone
AKA “C20-24 Alkyl Dimethicone, Silicone, Alkyl Silicone”
Synthetic
Ingredient Facts
C20-24 alkyl dimethicone
AKA: Silicone, Alkyl Silicone
Synthetic · Skin Conditioning · EWG: 2
Synthetic
Skin Conditioner
Silicone
Synthetic
Clean
A lightweight silicone that smooths skin and creates a silky, easy-to-blend texture in makeup and skincare products.
CAS #
200074-76-6
Form
Liquid
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.
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.
Skin Types
●all-skin-types, gentle
Best For
Dryness
Melanin-Rich Skin
Suitable
Pregnancy & Breastfeeding Safe
Yes
EWG
2
CIR
Safe
Pregnancy
Yes
Restricted By
CIR Safety Findings
Not a Sensitizer
ewg-2
medical-approval
pregnancy-nursing-safe
all-shades-safe
Regulatory Agencies
Verified Feb 2026
Data: CosIng · EWG · CIR