How to Make Dog Shampoo? | Gentle, Safe DIY Recipes

For the full breakdown, see our best Dog Shampoo for Dry Skin and Dandruff guide.

Making your own dog shampoo lets you control exactly what touches your pet’s skin, which matters when store-bought options irritate sensitive coats. These recipes work for regular washes and are especially useful for dogs with mild itching. Before you mix anything, one rule matters most: dogs lick their fur, so anything you put on them can end up in their stomach. That’s why ingredient choice is the whole game.

Safe Ingredients for Homemade Dog Shampoo

Stick to gentle, pet-safe basics that clean without stripping natural oils. The most reliable options are liquid castile soap, colloidal oatmeal, white or apple cider vinegar, glycerin, and aloe vera gel. Some recipes also use a small amount of non-toxic dish soap, though advice on this is mixed — one source flags dish soap as unsafe while another uses it in recipes.

The ingredients you must keep away from your dog entirely include:

• Tea tree oil — the AKC specifically flags this as toxic to dogs, and it should never touch their skin.
• Human shampoo — formulated for human pH, it can disrupt a dog’s skin balance.
• Harsh bar soaps — these strip natural oils and dry out the coat.

Baking soda appears in some recipes to balance acidity, but overusing it or vinegar can upset your dog’s skin pH. Use these ingredients sparingly, not as the base of every wash.

The Best DIY Dog Shampoo Recipes

Both are mild enough for routine bathing when your dog just needs a freshen-up.

Mix in a clean bottle until uniform, then use as you would any shampoo.

If you want oatmeal benefits, grind plain oats finely in a blender so they disperse instead of clumping.

Castile soap also works as a simple base on its own, diluted with water. Whichever recipe you choose, shake or stir before each use since ingredients separate when sitting.

How to Bathe Your Dog With Homemade Shampoo

Wet your dog’s coat thoroughly with warm water, then work the shampoo from neck to tail. Massage it into a lather, avoiding the eyes, ears, and mouth — vinegar stings badly if it gets in their eyes. Rinse completely; leftover soap residue causes itching that’s worse than the original problem.

You only need to wash the body and legs. The face gets a damp cloth instead of shampoo, and the ears stay dry unless your vet recommends otherwise.

If your dog has persistent dry skin or dandruff that home washes aren’t fixing, a targeted commercial product might serve you better. Our tested roundup of the best dog shampoo for dry skin and dandruff breaks down which formulas actually deliver relief.

Common Mistakes That Irritate Your Dog

Most homemade shampoo problems come from ingredients, not technique. Adding tea tree oil or other essential oils without veterinary guidance is the biggest risk — even “natural” oils can be dangerous when concentrated. Likewise, don’t assume every natural ingredient is automatically safe; oats and aloe are gentle, but essential oils are another category entirely.

Overwashing is the second most common error. Vinegar and baking soda both affect skin pH, so washing more than every few weeks with these recipes can dry your dog out. When in doubt, wash less often and use plain water for dirty paws between real baths.

Finally, remember that if your dog licks the shampoo off after bathing, topical exposure becomes oral exposure. For any dog prone to licking, rinse especially thoroughly and consider wiping their coat down with a damp towel afterward.

When you mix your own shampoo, you avoid the harshest ingredients found in some commercial products — but you also take on the responsibility of knowing what’s safe. These recipes from the AKC are a solid starting point for the average healthy dog, and when your dog has ongoing skin problems, a targeted store-bought formula often works better than a general-purpose DIY recipe.