21 CFR § 346.16
Analgesic, anesthetic, and antipruritic active ingredients
June 25, 2020
The active ingredient of the product consists of any of the following when used within the concentration range established for each ingredient:
(a) Camphor 0.1 to 3 percent.
(b) Juniper tar 1 to 5 percent.
(c) Menthol 0.1 to 1 percent.