Science
Mechanism of Action
As a synthetic xanthene dye, CI 45190 functions by absorbing and reflecting light, thereby imparting a violet color to cosmetic formulations. It does not exhibit known biological activity or provide any therapeutic effects on the skin.
Research
Clinical Evidence
Low confidenceN/A
Transparency
Dusting Analysis
CI 45190 is a colorant and does not have known biological activity or therapeutic effects on the skin, therefore the concept of 'dusting' in relation to efficacy is not applicable.
The Formula
Formulation
Stability
While generally considered water-soluble, CI 45190 exhibits a low water solubility of approximately 0.003477 mg/L at 25 °C. No specific optimal pH range for its stability has been identified in current research.
Safety
Safety Profile
The Cosmetic Ingredient Review (CIR) Expert Panel defers evaluation of color additives when the US Food and Drug Administration (FDA) has already assessed their safety. In the European Union, CI 45190 (Acid Violet 9) is an authorized coloring agent listed in Annex IV of Cosmetics Regulation (EC) No 1223/2009, with its use strictly permitted only in rinse-off cosmetic products. The FDA approves color additives for cosmetic use, requiring them to be listed in the Code of Federal Regulations, and certain batches may be subject to certification.
Your Skin
Skin Compatibility
Our Assessment
Verdict
CI 45190 serves purely as a cosmetic colorant for aesthetic purposes, with no inherent skin benefits, and its use is specifically restricted to rinse-off formulations in the EU.
Related
Similar Ingredients
Finding similar ingredients…
References
Sources