The ingredient narratives reshaping clean beauty.
Basic Violet 2
aka CI 42520 · rhodamine B hexyl ester · ethyl violet
A synthetic violet cationic dye depositing on hair to neutralise brassiness in purple shampoos. Deposits preferentially on damaged hair sections.
- Neutralises yellow/brassy tones via complementary colour principles
- Deposits selectively on porous, damaged hair sections
- Temporary toning — washes out over successive shampoos
- Strong colour intensity at low concentrations
- No bleaching required — colour deposit mechanism
- Purple shampoos
- Toning conditioners
- Colour-depositing masks
- Blue-black toning haircare
- Brass-neutralising treatments
Cationic dye — deposits on anionic hair surface via electrostatic interaction. Contact time critical — over-deposition causes visible purple/blue discolouration. Low pH increases deposition efficiency.
Cationic synthetic dye — excluded from strict natural/COSMOS formulations. Staining risk if misused (too long contact time or on very porous hair).
Excluded from strict natural beauty frameworks. Accepted in clean prestige haircare. Deposit-and-rinse purple shampoo mechanism well understood by consumers.
The ingredient narratives reshaping clean beauty.
Basic Violet 2
aka CI 42520 · rhodamine B hexyl ester · ethyl violet
A synthetic violet cationic dye depositing on hair to neutralise brassiness in purple shampoos. Deposits preferentially on damaged hair sections.
- Neutralises yellow/brassy tones via complementary colour principles
- Deposits selectively on porous, damaged hair sections
- Temporary toning — washes out over successive shampoos
- Strong colour intensity at low concentrations
- No bleaching required — colour deposit mechanism
- Purple shampoos
- Toning conditioners
- Colour-depositing masks
- Blue-black toning haircare
- Brass-neutralising treatments
Cationic dye — deposits on anionic hair surface via electrostatic interaction. Contact time critical — over-deposition causes visible purple/blue discolouration. Low pH increases deposition efficiency.
Cationic synthetic dye — excluded from strict natural/COSMOS formulations. Staining risk if misused (too long contact time or on very porous hair).
Excluded from strict natural beauty frameworks. Accepted in clean prestige haircare. Deposit-and-rinse purple shampoo mechanism well understood by consumers.