Science
Mechanism of Action
This ingredient functions as a formidable antioxidant, exhibiting over 250 times the activity of vitamin C and maintaining stability even after UVB exposure by neutralizing reactive oxygen species (ROS) through multiple non-pro-oxidative pathways. It also demonstrates anti-inflammatory properties, helps balance oil production and reduce sebum for acne management, and contributes to anti-aging by reducing wrinkle depth, enhancing collagen synthesis, and boosting skin hydration. Furthermore, it can decrease conspicuous facial pores, brighten skin by inhibiting tyrosinase and melanin production, and support skin barrier recovery while mitigating UVB radiation impact.
Research
Clinical Evidence
Low confidenceN/A
Key findings
- 01 Significantly reduced acne symptoms over 2 months of twice-daily application, without compromising the skin's barrier function or moisture levels.
- 02 Demonstrated anti-wrinkle efficacy, reducing wrinkle depth, and enhancing both collagen production and skin hydration after 8 weeks of twice-daily application in a double-blind study with 23 subjects.
- 03 Decreased the appearance of facial pores by 17.6% after 8 weeks of twice-daily use in a small study involving 10 individuals.
- 04 Showed a tendency to reduce reactive oxygen species (ROS) production in HDFa dermal fibroblasts when tested in vitro.
Transparency
Dusting Analysis
While some clinical efficacy is reported, significant safety concerns raised by the SCCS, including genotoxicity potential and a lack of comprehensive data, make high concentrations problematic. In vitro cytotoxicity was observed at 0.1% (1 mg/mL) in HDFa cells, which is a major red flag.
The Formula
Formulation
Stability
Fullerene ingredients generally show good UV, heat, and pH stability. Hydroxylation improves water solubility, though agglomeration and undissolved residues can still occur, particularly at higher concentrations, potentially impacting antioxidant properties. The color of the ingredient varies with hydroxylation level, from dark brown (low) to pale yellow or milky white (high), which is a crucial consideration for final product aesthetics. However, the SCCS has highlighted data gaps regarding the stability of hydroxylated fullerenes and their hydrated forms as a concern.
Safety
Safety Profile
The Scientific Committee on Consumer Safety (SCCS) published an adopted opinion in October 2023, stating they could not conclude on the safety of fullerenes and (hydrated) hydroxylated fullerenes for cosmetic use due to numerous uncertainties and data gaps (physicochemical, toxicokinetic, toxicological aspects). The SCCS specifically considers hydrated forms of hydroxylated fullerenes not safe due to potential genotoxicity, and extends this concern to hydroxylated fullerenes. Other significant concerns include the potential for inducing free oxyradicals, the presence of impurities/contaminants, phototoxicity, sensitizing potential, dermal absorption, and systemic availability of these nanoparticles. No FDA status has been found. In vitro studies observed cytotoxicity in HDFa cells at a concentration of 0.1% (1 mg/mL).
Your Skin
Skin Compatibility
Our Assessment
Verdict
Despite some promising clinical findings, the SCCS has explicitly stated it cannot conclude on the safety of hydroxylated fullerenes for cosmetic use, citing genotoxicity concerns and significant data gaps, making its inclusion in formulations highly risky.
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