The ingredient, explained
Chlorhexidine Dihydrochloride
N,N'-bis-4-Chlorophenyl--3‚12-diimino-2‚4,11‚13-tetraazatetradecanediamidine dihydrochloride
Ingredient guide
What it is and what it does
About this ingredient: EU CosIng ingredient registry (via Open Beauty Facts taxonomy) ↗
- Antimicrobial
- A technical role associated with controlling microorganisms on skin.
- Oral care
- Supports cosmetic functions in the mouth, such as cleaning or deodorising.
- Preservative
- Helps inhibit microbial growth in the cosmetic product.
Function definitions: European Commission ingredient function definitions (SCCNFP/0299/00, pages 16 to 20) ↗
Registry functions describe possible formulation roles, not results for a finished product. A dictionary entry is not an approval or a safety assessment.
A closer look
What the research shows
We have not yet published a checked study for this exact ingredient. This is a gap in our coverage, not a finding that research does not exist or that the ingredient is ineffective.
Ingredient research is not proof that a product containing this ingredient works.
Follow the formula
Products containing this ingredient
From the wider catalogue. Linked by the ingredient list, without an efficacy ranking.
Names and identifiers
- INCI name on ingredient lists
- CHLORHEXIDINE DIHYDROCHLORIDE
- CAS registry number
- 3697-42-5
- EC number
- 223-026-6
Other recorded names (2)
- chlorhexidine hydrochloride
- chlorhexidini hydrochloridum
Sources for this ingredient record
- EU CosIng ingredient registry (via Open Beauty Facts taxonomy) ↗ · ODbL 1.0 (Open Beauty Facts database) · Recorded Aug 8, 2026