A good dog shampoo will contain the following chemicals to do the job of cleansing your dog: Taurate Lauroyl lactylate. In a conditioner, these are that ingredients that do the conditioning: Behentrimonium Glycerin Cetearyl alcohol There are many good products available. The most popular dog shampoo on Amazon is Earthbath All Natural Dog Shampoo, which has ingredients that fit the criteria set forth by veterinary dermatologists. They are also cruelty-free and biodegradable. Other good brands include (but are not limited to) Bubba’s Rowdy Friends Groovy Bath Ultra Oatmeal Pet Shampoo, Vets Best Hypo-Allergenic Shampoo, Pro Pet Works Oatmeal Pet Wash Shampoo Plus Conditioner, Paw Choice Foaming Mousse Dog Shampoo (which can be used for water-phobes or dogs who have just had surgery and need to be kept clean without getting wet), and Ladybug Soap Company Handmade Natural Insect Repellent Dog Shampoo Soap Bar (you can borrow this one for yourself — but not for your cat). For dogs with dry skin who itch, Nootie Medicated Oatmeal Dog Shampoo Anti-ITCH Maxium Strength Formulation with 1% Lidocaine HCL ,1% Pramoxine HCL, and Colloidal Oatmeal will relieve discomfort and also won’t decrease the effectiveness of flea and tick ointment.