The short version
A dog’s skin is less acidic than ours (pH around 7 instead of 5.5). So a dog shampoo should be mild, as pH-neutral as possible and unscented, and contain no essential oils, many of which are toxic to dogs. Only bathe as often as truly needed, or the skin dries out.
Your dog rolled in the mud and the next bath is due. Ready-made dog shampoos are often pricey and packed with fragrances and additives no dog needs. Mixing a mild shampoo yourself takes five minutes and costs a fraction.
Before you start, one thing is crucial and often overlooked: a dog’s skin works differently from ours. Get that right and you bathe your dog far more healthily.
Why a dog’s skin is different
Human skin is slightly acidic, with a pH around 5.5. A dog’s skin sits noticeably higher, around the neutral range of 7. That sounds like a small difference but it matters: our shampoo and ordinary soap are tuned to our more acidic skin. Used on a dog, they can disturb the natural protective barrier, dry the skin out and encourage itching.
The fix is not complicated: use a particularly mild, as pH-neutral and unscented product as possible, and bathe only as often as truly needed. Frequent washing strips the skin and makes it more vulnerable. Healthy skin starts from within anyway, with good nutrition.
What does NOT belong in dog shampoo
Here safety matters more than any scent. Please leave these out:
- Tea tree oil: toxic to dogs, even in small amounts, strictly avoid.
- Citrus and many other essential oils: irritating to toxic, dogs react sensitively. When in doubt, work without essential oils entirely.
- Harsh fragrances and preservatives: burden your dog’s skin and nose.
- Human shampoo long-term: too acidic and too stripping for dog skin.
For pregnant bitches, puppies or sick animals, talk to your vet first.

Recipe · soothing
Mild oat dog shampoo
Oats soothe irritated, itchy skin without any fragrance. This amount is enough for a medium-sized dog.
You need
- 3 tbsp finely ground oats (grind to flour in a blender)
- 250 ml lukewarm water
- 2 tbsp mild, unscented dog shampoo base
- optional 1 tsp pure aloe vera gel for extra care
How to
Stir the oat flour into the lukewarm water and let it swell briefly. Gently stir in the wash base and optional aloe gel, do not whip it up. Mix fresh before each bath, as it does not keep without preservatives. Shake well before use.
How to bathe the dog correctly
Wet lukewarm
Soak the coat thoroughly with lukewarm water. Not too hot, dogs sense warmth differently than we do.
Massage gently
Work the shampoo into the coat with your fingers or a soft brush. Avoid eyes, ears and muzzle.
Rinse thoroughly
The most important step. Shampoo residue itches and irritates. Rinse until the water runs clear.
Dry
Towel dry with an absorbent towel. A blow dryer only on the coolest setting and at a distance, many dogs dislike it.
Good to know
A mild bath cares for the coat but does not replace treatment. With persistent itching, bald patches, redness, scaling, a bad smell or suspected parasites, the dog belongs in expert hands. Homemade shampoo is for normal coat care, not for skin conditions.
Getting the right base
Making your own works best with two well-chosen ingredients. What to look for:
- Dog shampoo base: mild, unscented, as pH-neutral for dogs as possible
- Colloidal oats, or fine oats to grind yourself
- No essential oils, no harsh fragrances in the ingredient list
Frequently asked
How often should I bathe my dog?
Can I use baby shampoo or human shampoo?
Which essential oils are toxic to dogs?
Does oat really help against itching?
Care for pets the right way
Dog, cat, horse, each needs its own care. We say honestly what helps.
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