murphyCycloheptasiloxane
AKA: Cyclomethicone 7, Tetradecamethylcyclotetradecaneheptasiloxane, J182.220I, Tetradecamethyl cycloheptasiloxane
Synthetic
Emollient
Solvent
Skin Conditioner
Clean
OriginSynthesized from silicon and oxygen atoms within the siloxane chemical family through polymerization processes. Produced by cyclical condensation and polymerization of siloxane monomers under controlled catalytic conditions.
Tetradecamethylcycloheptasiloxane
Formula
C14H42O7Si7
Mol. Weight
519.07
CAS #
107-50-6
Form
Liquid
Skin Types
●all-skin-types
Best For
General
Pregnancy & Breastfeeding Safe
Yes
Functions
Anticaking
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.
Solvent
Dissolves other ingredients so they distribute evenly in the formula. Often the invisible "base" everything else is mixed into.
Locks In Moisture
The paper trail
🔬Peer-reviewednone on file
⚖️Regulatory1 listing →
🛡️Safety-assessed3 reviews →
Counts, not a verdict. A listing isn't a study. The trail, you decide.
EWG
1
CIR
Safe as used
Pregnancy
Yes
Restricted By
Regulatory Agencies
Verified Jun 2026
Data: PubChem · CosIng · EWG · CIR