Common Name(s): Metal effect powder,metallic optical pigment,colour cosmetics shimmer
CAS Number: N/a
DESCRIPTION
What It Does: Creates authentic metallic colour and reflectance effects in eye shadows, highlighters, and nail colour through true metal specular reflection unavailable from non-metallic pearlescent pigments.
Why It's Used: Metal powders are the only way to achieve true metallic mirror-like reflectance in cosmetics โ mica and synthetic pearlescents provide pearl or shimmer effects, but only actual metal particles provide the authentic metallic luster requiring genuine metal conductivity.
How It Works: Metal surface electrons (free electron plasma) provide broad-spectrum reflection across visible wavelengths through drude model optical conductivity. the reflectance of metal surfaces (>90% for aluminum) provides the high-intensity metallic colour depth absent from non-conducting mineral pigments. particle size controls finish: fine (<10 ฮผm) โ satin; coarse (>30 ฮผm) โ glitter.
Typically Found In: Eye shadows,highlighters,nail colour
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: Check regulatory limits
SOURCING & ETHICS
Vegan Status: Yes โ mineral
Halal Status: Yes
Source Notes: Mineral/inorganic compound. cosmetic or pharmaceutical grade.
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
Aluminum and bronze powders are regulated as cosmetic colorants with specific maximum particle size and purity requirements. nano-sized metal powders (<100 nm) require additional safety assessment and regulatory notification in the eu.
Last Verified: 2026-03-12
Primary Sources: Cosing database,metal powder cosmetic colorant regulatory review