Summarize this article in one sentence.
Shampoo is not necessary to clean your hedgehog’s quills. In fact, some veterinarians and hedgehog breeders have recommended using only water to clean a hedgehog. If you decide to use shampoo, choose one that will not be harsh on your hedgehog’s skin.  Cat shampoo is a good choice for cleaning your hedgehog’s quills.  Tear-free baby shampoo is another good option.  Since hedgehogs are prone to dry skin, oatmeal shampoo would be a great choice. Oatmeal nourishes and moisturizes the skin. Look for a pet-specific oatmeal shampoo at your local pet store. Other than shampoo, you will need a soft-bristled toothbrush and a few clean hand towels. As an alternative to a toothbrush, you could use a human nailbrush.  The toothbrush or nailbrush are small enough to give your hedgehog’s quills a good cleaning. In addition, these items would protect your hands from getting pricked during cleaning. Make sure the toothbrush or nailbrush is dedicated to  only  cleaning your hedgehog.  Nailbrushes are available at your local pharmacy. If you are cleaning your hedgehog’s quills in a sink, you will also need a rubber stopper. Place your supplies by the bathing area (either the tub or sink) so you will have everything close by when you need it. Use lukewarm, not hot, water, to clean your hedgehog’s quills. Before filling the sink or tub, test the water temperature by running it over your hands. Once the water feels comfortably warm on your hands, fill the sink or tub with two to four inches (5 to 10 centimeters) of water.   Clean your sink or tub before adding the water. Be mindful that hedgehogs tend to urinate or defecate during bath time. If you are using a sink, choose one where you will not be preparing food.  Make sure to use shallow water only in your hedgehog's bath. If the hedgehog rolls up in deep water, then he may drown. After the bath, disinfect the sink or tub.

Summary:
Decide whether to use shampoo. Organize your supplies. Run some water in a sink or tub.