Science
Mechanism of Action
Operating as a prostamide analog, Norbimatoprost is inferred to activate specific prostamide receptors, distinct from F prostanoid receptors. This activation is believed to extend the anagen (growth) phase of the hair cycle and increase hair follicle size, contributing to enhanced hair growth.
Research
Clinical Evidence
Low confidenceN/A
Transparency
Dusting Analysis
The Scientific Committee on Consumer Safety (SCCS) of the European Commission concluded that Norbimatoprost, along with other prostaglandin analogues, 'cannot be considered safe for use in cosmetic products' due to its potent pharmacological activity at low concentrations and a lack of sufficient data to exclude potential adverse effects, including reproductive/developmental toxicity. The FDA typically views ingredients that induce physiological changes, such as hair growth, as drugs rather than cosmetics, regardless of marketing claims.
The Formula
Formulation
Stability
N-Norbimatoprost is recommended to be stored at -20°C for maximum product recovery, suggesting thermal sensitivity. While direct stability data for Norbimatoprost is limited, its parent compound, bimatoprost, shows stability at 4°C and 25°C but degrades at higher temperatures (50°C and 70°C).
Safety
Safety Profile
Norbimatoprost, as a prostaglandin analog, carries significant safety concerns. The SCCS of the European Commission explicitly concluded in 2025 that it 'cannot be considered safe for use in cosmetic products' due to its potent pharmacological activity and insufficient comprehensive safety data, including concerns regarding reproductive/developmental toxicity. While its parent compound, bimatoprost (Latisse), is an FDA-approved prescription drug for eyelash growth, Norbimatoprost lacks specific FDA approval for cosmetic use.
Your Skin
Skin Compatibility
Our Assessment
Verdict
Given the explicit conclusion by the European Commission's SCCS that Norbimatoprost 'cannot be considered safe for use in cosmetic products' due to its potent pharmacological activity and insufficient safety data, this ingredient is strongly advised against.
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