Dimethiconol Cysteine

Dimethiconol Cysteine molecular structure
molecular structure · PubChem
AKA: Silicone-Amino Acid Complex
Synthetic
Skin Conditioner
Hair Care
Amino Acid
Silicone
Clean
Dimethiconol Cysteine is the reaction product of dimethiconol and cysteine
Form
Powder
Functions
Hair Conditioning
A catch-all term for ingredients that improve how skin looks and feels — softer, smoother, more supple. The workhorse behind most moisturizers.
Conditions Hair
Softens and detangles hair
Traditional Use
A modern silicone-amino acid hybrid developed for cosmetics. Combines silicone's conditioning properties with cysteine, an amino acid important in skin structure, created to improve hair and skin conditioning in contemporary formulations.
EWG
1
CIR
Safe as used
Pregnancy
Yes
CIR Safety Findings
Not a Sensitizer
medical-approval
all-shades-safe
Regulatory Status
USA✔ permitted
EU⚠ restricted
JAPAN⚠ restricted
CANADA⚠ restricted
Skin Types
●all-skin-types
Best For
General
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