Permitted combinations of active ingredients.

21 C.F.R. § 333.320

in effectEffective: 2024-07-01

(a) Resorcinol identified in § 333.310(b) may be combined with sulfur identified in § 333.310(f). (b) Resorcinol monoacetate identified in § 333.310(c) may be combined with sulfur identified in § 333.310(f).

Source: eCFRURL: https://www.ecfr.gov/api/versioner/v1/full/2024-07-01/title-21.xmlFetched: 7/26/2026