Hereditary nasal parakeratosis of the Labrador retriever is an autosomal recessive trait resulting in a keratinization defect of the nasal planum. It affects Labrador retrievers. Onset is noted at 6-12 months of age. There is dorsal nasal planum hyperkeratosis that is gray-brown in color. Diagnosis is made based upon signalment, history, and dermatohistopathology. Histology reveals parakeratotic hyperkeratosis with intercellular fluid (serum lakes). I treat as for nasal hyperkeratosis of older dogs, and most often use Dermoscent Biobalm® (Bayer Animal Health) twice daily to effect and maintain use a few times per week.