Fullerene C60 (CAS 99685-96-8) has made the leap from laboratory curiosity to premium cosmetic ingredient. Its radical-scavenging (antioxidant) properties are the basis of its use in high-end skincare — where it is marketed as an anti-aging and protective ingredient. This guide covers how C60 is used in cosmetics, the safety considerations, and what formulators should know.
1. Why C60 in Cosmetics
Fullerene C60 is a spherical carbon molecule (60 atoms) with strong electron-accepting properties — it acts as a free-radical scavenger, neutralizing reactive oxygen species. In cosmetics this translates to:
- Antioxidant effect: potential protection of skin cells from oxidative stress.
- Anti-aging positioning: a premium, science-forward ingredient for high-end products.
- Differentiation: nanomaterial-based claims appeal to innovation-focused brands.
2. How It Is Used in Formulations
- Oil-phase ingredient: C60 is oil-soluble (soluble in plant oils and some solvents), so it is typically incorporated into the oil phase of serums, creams and essences.
- Water-dispersible derivatives: hydroxylated fullerenol or PEG-modified C60 for water-based formulations.
- Typical levels: very low use levels (ppm range) — C60 is highly active per unit.
3. Safety and Regulatory Considerations
- C60 itself is generally considered low in acute toxicity, but regulatory status varies by region — some markets restrict or are still evaluating nanomaterials in cosmetics.
- Verify the C60 purity (e.g. 99%+) and absence of residual solvents/heavy metals on the COA.
- Confirm the regulatory status of nanomaterials in your target market before formulating.
- Conduct skin-compatibility testing per your product’s requirements.
4. Quality Parameters for Cosmetic-Grade C60
| Parameter | Recommended |
|---|---|
| Purity | 99%+ (cosmetic grade) |
| C70 content | Low (<1%) |
| Residual solvent | Low (e.g. toluene < limits) |
| Heavy metals | Low |
| Appearance | Black/dark brown powder |
5. FAQ
Is fullerene C60 safe in cosmetics?
Purified C60 is used in some premium cosmetics, but nanomaterial regulatory status varies by region — verify compliance for your market before formulating.
How is C60 incorporated into a formula?
As an oil-soluble powder in the oil phase, or as a water-dispersible derivative (fullerenol/PEG-C60) for aqueous systems.
Why is C60 marketed as an antioxidant?
Its electron-accepting structure allows it to neutralize free radicals, the basis of its antioxidant and anti-aging positioning.
What purity do I need?
99%+ with low C70, low residual solvent and low heavy metals for cosmetic use; verify on the COA.
6. References and Further Reading
- Cosmetic ingredient literature on fullerenes and nanomaterials
- Regulatory guidance on nanomaterials in cosmetics (by region)
This article is published for industrial and technical reference by PolyblueChem. Always verify regulatory status for your market.
PolyblueChem supplies fullerene C60 (CAS 99685-96-8) in 95%, 99% and 99.5% grades with COA. See our C60 guide. Contact us for specifications and quotations.