Science
Mechanism of Action
Primarily utilized as a cosmetic colorant, CI 45350 works by absorbing light and re-emitting it, creating a distinctive fluorescent effect. Its visual properties are highly sensitive to pH levels; the fluorescence is most prominent in neutral or alkaline conditions and disappears when acidified, making it an excellent visual indicator in precision formulations.
Research
Clinical Evidence
Low confidenceN/A
Transparency
Dusting Analysis
As a potent colorant, this ingredient is used at extremely low concentrations to achieve the desired aesthetic. It is not an active ingredient, so 'dusting'—the practice of using sub-therapeutic levels of an active—is not applicable here.
The Formula
Formulation
Stability
Heat tolerant and stable in aqueous solutions. The characteristic fluorescence is pH-dependent, requiring a neutral to alkaline environment to be visible.
Conflicts
- Acidic environments (loss of fluorescence)
Safety
Safety Profile
Regulated globally; FDA certification is required (as D&C Yellow No. 7 or No. 8). Restricted to external applications only. A strict 0.044% limit applies specifically to contact lens solutions.
Your Skin
Skin Compatibility
Our Assessment
Verdict
A safe and effective colorant for achieving specific aesthetic effects and pH-responsive visual properties in external skincare.
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