Basic Violet 1
AKA “Crystal Violet, Gentian Violet, C.I. 42555”
Ingredient
Ingredient Facts
Basic violet 1
AKA: Crystal Violet, Gentian Violet, C.I. 42555
Ingredient · Hair Dyeing · EWG: 4
Synthetic
Safety Concern
Not Clean
Methyl violet (CI 42535)
Formula
C25H30ClN3
Mol. Weight
407.98
CAS #
8004-87-3
Form
Powder
See origin →
Functions
Hair Dyeing
Colors Hair
Traditional Use
A synthetic triphenylmethane dye developed in the late 19th century, historically used as a biological stain before being adopted for cosmetic colorization in the 20th century.
Skin Types
●all-skin-types
Best For
General
Final Report on the Safety Assessment of Basic Violet 1, Basic Violet 3 and Basic Violet 4
Cosmetic Ingredient Review (CIR) Expert Panel
International Journal of Toxicology
Final report on the safety assessment of Basic Violet 1, Basic Violet 3, and Basic Violet 4.
Diamante C, Bergfeld WF, Belsito DV, Klaassen CD, Marks JG Jr et al.
International journal of toxicology, 2009
Final report on the safety assessment of Basic Violet 1, Basic Violet 3, and Basic Violet 4.
Diamante C, Bergfeld WF, Belsito DV, Klaassen CD, Marks JG Jr et al.
International journal of toxicology, 2009
Final report on the safety assessment of Basic Violet 1, Basic Violet 3, and Basic Violet 4.
Diamante C, Bergfeld WF, Belsito DV, Klaassen CD, Marks JG Jr et al.
International journal of toxicology, 2009
Basic Violet 1
Environmental Working Group (EWG)
EWG Skin Deep Cosmetics Database
Basic Violet 1
Health Canada
Health Canada Cosmetic Ingredient Hotlist
Basic Violet 10
Health Canada
Health Canada Cosmetic Ingredient Hotlist
Verified Jun 2026
Data: PubChem · CosIng · EWG · CIR