Hexamidine

AKA: 3811-75-4, Hexamidina, Hexamidinum, 4'-(1, 6-Hexanediylbis(oxy))bis-benzenecarboximidamide, CHEBI:87184, Benzenecarboximidamide, 1, 6-di(para-amidinophenoxy)hexane
Synthetic
Preservative
Not Clean
Benzenecarboximidamide, 4,4'-(1,6-hexanediylbis(oxy))bis-
Formula
C20H26N4O2
Mol. Weight
354.40
CAS #
3811-75-4
Form
Powder
Functions
Preservative
Keeps your product from growing bacteria, mold, or yeast. Without these, that jar of cream becomes a petri dish in about a week.
Preserves Formula
Fights Bacteria
Reduces Inflammation
Wound Healing
Prevents microbial growth
Traditional Use
Developed in the mid-20th century as a synthetic antimicrobial agent. It was created specifically for use in cosmetics and personal care products as a preservative and antibacterial component.
EWG
4
CIR
Safe as used
Pregnancy
Caution
CIR Safety Findings
Not a Sensitizer
medical-approval
all-shades-safe
Concentration Guide
0.1%
0%0%
Reg. Limit
EU regulatory limit: 0.1%. Source: EU Cosmetics Regulation (EC) 1223/2009, Annex V (Preservatives), Entry 47.
Regulatory Status
USApermitted
EUpermitted
JAPANpermitted
CANADApermitted
Skin Types
all-skin-types
Best For
General
Pregnancy & Breastfeeding Safe
Caution
The paper trail
🔬Peer-reviewed1 paper
⚖️Regulatory1 listing
🛡️Safety-assessed2 reviews
Counts, not a verdict. A listing isn't a study. The trail, you decide.
Verified Jun 2026
Data: PubChem · CosIng · EWG · CIR