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CYTOSINE

CAS 71-30-7
95

Safety score · 0–100

Excellent

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

About

Cytosine is a cosmetic ingredient used in product formulations. Exercise caution due to limited available safety data.

Cytosine is one of the four canonical nucleobases constituting DNA and RNA, classified as a pyrimidine derivative. It is not categorised under any GHS hazard class and is not listed in any EU cosmetics restriction Annex. As a naturally occurring biochemical that forms part of the skin's natural moisturising factor and nucleic acid pool, it is considered one of the safest cosmetic ingredients available. Its chemical role in cosmetics is primarily as a biocompatible conditioning component in advanced skin-care formulations.

Skin benefits

  • Natural Moisturising Factor (NMF) component
  • Biocompatible skin conditioning
  • Supports skin barrier homeostasis

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.