Naphthyfine is an antifungal agent for external use, which belongs to the class of allylamines. The mechanism of action is associated with the inhibition of squalene-2,3-epoxidase, which leads to a decrease in the formation of ergosgerol, which is part of the cell wall of the fungus. It is active against dermatophytes, such as trichophyton, epidermophyton and microsporum, mold (Aspergillus spp.), yeast fungi (Candida spp., Pityrosporum) and other fungi (for example. Sporothrix schenckii). In relation to dermatophytes and aspergillus naphthyline is fungicidal. With regard to yeast fungi, the preparation shows fungicidal or fungistatic activity, depending on the strain of the microorganism. Has antibacterial activity against gram-positive and gram-negative microorganisms that can cause secondary bacterial infections. Has an anti-inflammatory effect, which contributes to the rapid disappearance of symptoms of inflammation, especially itching.