Science
Mechanism of Action
This direct colorant works by physical deposition and adsorption onto the keratin substrate of the skin. Its violet pigment optically corrects yellow undertones, thereby balancing the visible skin tone without chemical reaction.
Research
Clinical Evidence
High confidence1%
Key findings
- 01 A 1% concentration showed no systemic toxicity or local skin reactions in dermal carcinogenicity studies on mouse skin.
- 02 Multicenter patch tests on 736 eczema patients using 1% concentration revealed no positive allergic or significant irritant reactions, with only minimal discoloration noted.
Transparency
Dusting Analysis
The Formula
Formulation
Stability
Highly stable in aqueous solutions across a wide pH range (1-9), demonstrating good lightfastness (rating 3-4) and vibrant color retention in surfactant systems.
Conflicts
- strong oxidizing agents
- strong reducing agents
- mucous membrane contact areas (restricted use)
Safety
Safety Profile
CIR deems it safe for hair dyes, and FDA permits its use (Ext. Violet 2) in externally applied cosmetics. SCCS recommends limiting its use to 0.5% in hair dyes and advises against contact with mucous membranes, although patch tests suggest low irritancy for skin.
Your Skin
Skin Compatibility
Our Assessment
Verdict
Acid Violet 43 is a valuable colorant for precision skincare formulations, offering safe and effective optical correction of yellow undertones, supported by extensive safety assessments.
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