Common Name(s): Ci 42090,approved cosmetic colorant,fd&c blue 1 pigment
CAS Number: N/a
DESCRIPTION
What It Does: Provides colour in cosmetic formulations within permitted application areas (eye, lip, or general) as specified per ci 42090 in fda 21 cfr 73/74 and eu annex iv.
Why It's Used: Regulatory compliance requires verifying permitted use category (fd&c, d&c, ext. d&c) and approved application area for each target market before formulating.
How It Works: Colour from electronic transitions in the chromophore structure โ metal d-orbital transitions (inorganic pigments) or ฯโฯ* transitions (organic chromophores) absorb specific visible wavelengths providing the perceived complementary colour.
Typically Found In: Colour cosmetics
TECHNICAL DETAILS
Primary Category: Active ingredient โ mineral / metal active
Secondary Functions: Antimicrobial,sebum regulation,antioxidant enzyme cofactor
Application Areas:
Facial Skincare
Body Care
Hair Care
Beard Care
Color Cosmetics (Makeup)
Dietary/Oral Supplements
Typical Concentration Range: Per fda/eu permitted list
SOURCING & ETHICS
Vegan Status: Conditional - supplier confirmation required
Halal Status: Conditional - basis not stated in source record; supplier origin confirmation required to determine what evidence applies
Source Notes: Mineral/inorganic compound. cosmetic or pharmaceutical grade. [audit 2026-07-29 rev2: status downgraded on audit. determination requires shariah-panel sign-off.]
SKIN COMPATIBILITY
Irritancy Rating: 1/5 โ very low
Comedogenicity Rating: 0/5 โ non-comedogenic
Sensitivity Concerns: Non-irritating at recommended concentrations.
Safe for Sensitive Skin: Yes at recommended concentrations
SAFETY & COMPATIBILITY
Safety Profile: Excellent safety profile at cosmetic concentrations. ewg score: 1โ2.
Works Well With: Niacinamide,salicylic acid,other actives
Avoid Combining With: No significant incompatibilities at standard concentrations
SCIENTIFIC NOTE
Us fda requires batch certification per lot; eu annex iv restricts by product type. both markets require verifying the specific permitted use category for each colorant.
Last Verified: 2026-03-12
Primary Sources: Fda 21 cfr 73/74,eu annex iv cosmetic colorant