(Virbac) Cortisoothe Shampoo is indicated for the temporary relief of inflammation and itching associated with corticosteroid-response skin conditions including atopy and flea bite dermatitis in dogs, cats, and horses. Cortisoothe is a colloidal oatmeal shampoo containing 1% hydrocortisone. Apply to a wet coat, rub into skin, and lather. Wait 5-10 minutes and rinse well. Cortisoothe Shampoo may be used daily or as indicated. Hydrocortisone.