Is Argireline safe?

No. Argireline targets the same SNARE complex mechanism as Botox but through topical application, which means far less reaches the muscle. The effect is much more modest — think subtle softening of expression lines, not the dramatic smoothing of injectable Botox.

There are anecdotal reports of skin appearing less firm with prolonged heavy use, possibly from excessive muscle relaxation in the applied area. This is uncommon and reversible by discontinuing use. Most dermatologists consider it safe at typical concentrations.

The one clinical study showing wrinkle reduction used 10% concentration, and many consumer products contain significantly less — The Ordinary is one of the few brands that discloses the full 10% concentration. But a 2025 Cosmetic Ingredient Review (CIR) safety assessment found sufficient safety data only up to 0.005% concentration, far below the studied efficacy dose. That doesn't mean 10% products are dangerous — it means there isn't yet a robust safety dataset at the concentration shown to work, so "higher concentration is simply better" isn't a safe assumption to make from the evidence available.