Analgesics, pain-relieving products such as anesthesia products, relieve pain, itching, and burning by depressing receptors on pain nerves.

Examples of pain killer include:

MENTHOL 0.1% to 1.0% (higher than 1.0% is not recommended)

Camphor 0.1% to 3% (higher than 3% is not recommended)

Juniper tar 1% to 5%