Science
Mechanism of Action
This ingredient functions by physically scattering and reflecting incident light, thereby imparting a distinct red coloration to the product. Its insoluble nature necessitates meticulous dispersion within the formulation matrix to achieve homogenous color distribution, as it does not dissolve.
Research
Clinical Evidence
Insufficient-data confidenceN/A
Transparency
Dusting Analysis
As an insoluble pigment, Pigment Red 48 is typically supplied and handled in a powdered form. During formulation, appropriate engineering controls and personal protective equipment are essential to manage potential airborne particulate matter and ensure manufacturing safety and product consistency.
The Formula
Formulation
Stability
Pigment Red 48:2 and 48:3 variants exhibit optimal stability within a pH range of 7.0-8.0, demonstrating good resistance to both acidic and alkaline conditions. It maintains integrity against light, heat (withstanding temperatures between 180°C and 240°C depending on the specific variant and medium), and general environmental stressors. Achieving its full color potential requires efficient dispersion via high-shear mixing or milling, given its insolubility in water and most organic solvents.
Conflicts
- Extreme pH levels
- Strong solvents
Safety
Safety Profile
The EPA's Office of Pollution Prevention and Toxics has identified Pigment Red 48 as having low concern for human health, indicating minimal skin absorption. A 5% solution of its disodium salt demonstrated no skin irritation in rabbit studies. The Cosmetic Ingredient Review (CIR) panel has determined it is safe for use in cosmetic applications. While not listed with specific FDA approval for every cosmetic variant, it is regulated under the FDA's broader color additive provisions, permitting the use of such lakes in cosmetics like lipsticks, blushes, and eyeshadows.
Your Skin
Skin Compatibility
Our Assessment
Verdict
Pigment Red 48 is a safe and stable colorant, providing a vibrant red hue without offering direct skincare benefits.
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