Menthol
0.21% — the cold you notice first
- It does not lower the temperature of your skin. It acts on the nerve endings that report cold, so the skin sends a cold message without anything actually cooling down.
- That is why the sensation arrives in seconds and fades on its own, and why it feels different from putting an ice pack on.
- The percentage is deliberate: enough menthol to register, not enough to sting.
- If your skin feels sharp rather than cool, you have either used too much or applied it straight after a hot shower.
Menthol is the first thing you feel and the first thing to go. The warmth that follows is camphor, further down this page.