Science
Mechanism of Action
Solvent Red 3 functions as a synthetic azo dye, primarily acting on the skin to impart color to cosmetic products, skin itself, nails, or hair.
Research
Clinical Evidence
Low confidenceN/A
Transparency
Dusting Analysis
The Formula
Formulation
Stability
This ingredient exhibits stability when exposed to 5% hydrochloric acid, showing no discernible change. It is generally stable in the presence of 5% sodium carbonate. Solvent Red 3 has a melting point of 168°C and maintains heat stability up to 120°C.
Conflicts
- Water-based formulations (due to insolubility in water)
- Products intended for use on or in the immediate vicinity of mucous membranes (e.g., lip and eye area, restricted in EU)
- Cosmetic products designed for prolonged skin contact (restricted to brief contact in EU)
- N-nitrosating agents (potential for forming N-nitrosamines, a general concern for azo dyes)
Safety
Safety Profile
No specific Cosmetic Ingredient Review (CIR) report is available for Solvent Red 3 (C.I. 12010). The Scientific Committee on Consumer Safety (SCCS) has expressed broad concerns regarding azo dyes, noting that those capable of splitting into carcinogenic arylamines pose potential carcinogenic risks. For some azo dyes, including Solvent Red 3, a full risk assessment cannot be adequately performed, indicating potential consumer health risks. Consequently, European regulations impose significant restrictions on its use: it is forbidden in products applied to or near mucous membranes (such as the lip and eye areas) and is only permitted in cosmetic products with brief skin contact. Some European regulations also prohibit its use in hair dye products. It is crucial to distinguish Solvent Red 3 from FD&C Red No. 3 (Erythrosine, CI 45430), which is a distinct dye banned in the U.S. for cosmetics and topical drugs since 1990 due to animal cancer links, and whose authorization for food and ingested drugs is currently under revocation by the FDA.
Your Skin
Skin Compatibility
Our Assessment
Verdict
Its primary function as a cosmetic colorant is outweighed by significant safety concerns, including potential carcinogenicity and high irritancy, making it unsuitable for precision skincare formulations.
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