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SYNTHETIC RUBY

CAS -
88

Safety score · 0–100

Good

Derived from EU CosIng regulatory status, PubChem hazard data and published research. How we score.

About

A lab-created gemstone (corundum) used in cosmetics for its sparkle and color, chemically identical to natural ruby but without ethical sourcing concerns.

Synthetic Ruby is aluminum oxide (corundum, Al2O3) doped with chromium to produce the characteristic red color, manufactured to replicate natural ruby gemological properties. In cosmetics, it functions as a decorative pigment and sparkle agent in color cosmetics, nail polishes, and skincare products seeking a luxurious aesthetic. The ingredient is chemically identical to naturally-occurring ruby but without the ethical concerns associated with gem mining. It is not specifically restricted under EU Regulation 1223/2009 and is generally regarded as chemically inert and safe in cosmetic applications at the particle sizes used.

Skin benefits

  • Decorative sparkle and color
  • Luxurious aesthetic in premium products
  • Mineral cosmetic component
  • Chemically inert and stable

Known concerns

  • Particle size considerations for inhalation (relevant for loose powders)
  • Generally regarded as very safe
  • Metal oxide pigments may rarely cause local irritation if particles penetrate compromised skin

References

EU

EU CosIng database

European Commission cosmetic ingredient registry — regulatory status, restrictions, authorised functions.

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This profile is for educational purposes and does not constitute medical advice. Regulatory status and scientific understanding evolve — always read the physical product label and consult a healthcare professional for personal concerns.