Itchy skin and allergies don't just cause your dog major discomfort -- they can lead to broken skin and infections, too. The best shampoo for your pet depends on the nature of his condition, so if you notice that he's consistently scratching, restless or suffering with red and visibly dry skin, see your vet for a diagnosis and an appropriate recommendation.
Use a shampoo formulated for dogs with dry skin -- these are generally made with special moisturizers and soothing oatmeal to stop the itching and help the skin heal. Over-the-counter shampoos are typically effective for dry, itchy skin caused by dry weather, but for allergies, you'll probably need a prescription-strength shampoo. Talk to your vet about your dog's condition and get either a prescription for allergy-treating shampoo or a recommendation based on your dog's individual symptoms.
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