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FULLERENES.

Questionable CAS 99685-96-8 / ANTIMICROBIAL, SKIN CONDITIONING

Fullerenes are unique spherical carbon molecules renowned for their exceptional antioxidant properties, often referred to as 'radical sponges.' They offer a multifaceted approach to skincare, addressing concerns from free radical damage and acne to hydration and collagen stimulation.

Antioxidant Antimicrobial Skin conditioning Anti-acne Sebum reduction Anti-aging Collagen stimulation Hydration Pore reduction Skin brightening Anti-inflammatory UV damage prevention

Science

Fullerenes exert their primary action as potent antioxidants, efficiently neutralizing free radicals due to their numerous double bonds, maintaining stability even after reaction. They also exhibit antibacterial effects against *Propionibacterium acnes* and reduce sebum production, contributing to acne alleviation. Furthermore, fullerenes support skin regeneration, enhance collagen synthesis, improve hydration, and contribute to overall skin protection by inhibiting undesirable cellular changes and melanin production.


Research

Medium confidence
Effective range 0.0278–1%
Optimal

N/A

Key findings

  1. 01 In a 2-month clinical trial, a 1% fullerene cream applied twice daily significantly reduced acne, pus accumulation, and sebum production without impairing skin barrier function or moisture levels.
  2. 02 An 8-week randomized, double-blind study on 23 Japanese women showed that a LipoFullerene cream (fullerene-C60 at 278 ppm in squalane) applied twice daily significantly boosted skin moisture and reduced wrinkle formation compared to placebo.
  3. 03 Studies indicate that fullerene lotion application over 2 months can decrease wrinkle depth, increase skin collagen, and enhance hydration for plumper skin.
  4. 04 A small 8-week study involving 10 individuals reported a 17.6% reduction in conspicuous facial pores with twice-daily fullerene cream application.

Transparency

Not commonly dusted

The Formula

Solubility
Oil
Optimal pH 5.5 – 7.5
0 7 14

Stability

Fullerenes are inherently stable to light, heat, and pH. While pure C60 is oil-soluble, water-soluble derivatives exist for broader formulation compatibility. For incorporation into aqueous phases, temperatures below 40°C (100°F) are recommended. Higher concentrations of certain derivatives, like fullerenol, may lead to agglomeration, potentially reducing efficacy.


Safety

CIR Status
Not reviewed
Sensitization risk Moderate

The EU Scientific Committee on Consumer Safety (SCCS) has expressed significant concerns regarding the safety of fullerenes in cosmetics, citing insufficient data on potential genotoxicity, impurities, potential for free oxyradical production, phototoxicity, and systemic absorption. Specifically, hydrated forms of hydroxylated fullerenes are deemed unsafe due to genotoxicity. While early research suggested low irritation, the SCCS indicates a pressing need for comprehensive data, otherwise, fullerenes may face a ban. A sensitivity test is advisable, especially for sensitive individuals, given these concerns.


Your Skin

Yes Normal
Yes Dry
Yes Oily
Yes Sensitive
Irritancy Low
Comedogenicity Low

Our Assessment

Questionable

While fullerenes demonstrate promising multi-functional benefits from clinical studies, their widespread use is questionable due to significant safety concerns raised by the SCCS regarding potential genotoxicity and other unknown risks, requiring further comprehensive data.


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References