Bis-Isobutyl PEG-24/PPG-7/Dimethicone Copolymer
AKA “Silicone Copolymer, Silicone Blend”
Synthetic
Ingredient Facts
Bis-isobutyl peg-24/ppg-7/dimethicone copolymer
AKA: Silicone Copolymer, Silicone Blend
Synthetic · Humectant · EWG: 4
Synthetic
Humectant
Occlusive
Silicone
Synthetic
Clean
A lightweight conditioning agent that helps lock in moisture and create a smooth, protective layer on skin and hair.
CAS #
158451-77-5
Form
Liquid
State
Solid
See origin →
Functions
Film Forming
Creates a physical seal on skin to lock moisture in and keep irritants out. The "slugging" ingredient — barrier protection.
Humectant
A moisture magnet. Pulls water from the air and deeper skin layers up to the surface to keep skin plump and hydrated.
Locks In Moisture
Traditional Use
Developed as a cosmetic conditioning agent and emollient in contemporary formulations to enhance product stability and sensory feel, with origins in synthetic polymer chemistry.
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