Bis-Isobutyl PEG-13/Dimethicone Copolymer
AKA “Silicone Copolymer, Silicone Blend”
Synthetic
Ingredient Facts
Bis-isobutyl peg-13/dimethicone copolymer
AKA: Silicone Copolymer, Silicone Blend
Synthetic · Emollient · EWG: 4
Synthetic
Emollient
Occlusive
Skin Conditioner
Silicone
Synthetic
Clean
A silicone-based conditioning agent that helps smooth and soften skin and hair while improving product texture and feel.
CAS #
197980-52-2
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.
Film Forming
Creates a physical seal on skin to lock moisture in and keep irritants out. The "slugging" ingredient — barrier protection.
Viscosity Controlling
Creates smooth skin texture
Helps improve product spreadability
Provides soft
silky feel
Traditional Use
A modern silicone-based copolymer created in the late 20th century to improve texture, spreadability, and wear-time in cosmetic formulations with minimal historical precedent.
Skin Types
●all-skin-types
Best For
Dryness
Melanin-Rich Skin
Suitable
Pregnancy & Breastfeeding Safe
Yes
EWG
4
CIR
Insufficient
Pregnancy
Yes
CIR Safety Findings
Not a Sensitizer
medical-approval
all-shades-safe
Regulatory Agencies
Verified Feb 2026
Data: CosIng · EWG · CIR