If your dog suffers from persistent itchiness, sour odor, red greasy patches, or flaky skin, an antifungal shampoo that targets yeast and dermatophyte fungi can help improve skin health. These medicated formulas often include fungal‑fighting ingredients that clean deeply while relieving symptoms, and must be used under vet guidance as directed. https://petnovax.com/best-antifungal-dog-shampoo/