Quick answer: Use a dog-specific shampoo with a near-neutral pH (around 7.0). Oatmeal and aloe formulas suit most dogs. Sensitive-skin formulas are best for skin allergies. Whitening formulas work for white or pale coats. Never use human shampoo, dish soap, or baby shampoo. UK prices run £5 to £20 for a 500ml bottle, with branded sensitive-skin formulas at the upper end.
Why dog shampoo is different from human shampoo
Dog skin is more neutral than human skin. The pH of dog skin sits around 7.0 to 7.5 (close to neutral), while human skin is more acidic at around 5.5. Human shampoo, even a gentle "baby" version, is formulated for the more acidic pH and will dry out dog skin with regular use. Dish soap is even more aggressive and strips the natural oils completely.
A dog-specific shampoo is pH-balanced for dogs, which keeps the skin barrier healthy and reduces itching after a bath.
Types of dog shampoo
Oatmeal and aloe (everyday). The most common type. Gentle, moisturising, and a good default for a dog with healthy skin. Most UK brands (Johnsons, Ancol, Lily's Kitchen) sell an oatmeal version.
Sensitive skin. For dogs with allergies, hot spots, or recurring itching. Usually fragrance-free, dye-free, and based on colloidal oatmeal or aloe. UK picks: Douxo S3 Calm, Vet's Best Hypoallergenic, Animology Sensible.
Puppy. Milder than adult formulas, tear-free in the best versions. Most are just a slightly more dilute oatmeal formula. Puppies do not need a puppy-specific shampoo, but a tear-free formula is easier to use.
Whitening. For pale, white, or light-coloured coats. Uses optical brighteners or mild bleaching agents to lift stains. Pick a whitening formula without sodium lauryl sulfate (SLS) to avoid drying the skin. UK pick: Chris Christensen White On.
Deodorising. For dogs that smell strongly (often a sign of skin or ear issues). Look for formulas with natural deodorising agents (oatmeal, baking soda, essential oils safe for dogs). Avoid heavy perfumes.
Waterless. Foam or spray shampoo for a quick freshen-up between baths. Useful for older dogs, sick dogs, or cold mornings. UK pick: Burt's Bees Waterless Shampoo.
Medicated. For skin conditions, prescribed by your vet. Do not use medicated shampoo without vet guidance.
What to avoid
- Human shampoo, including baby shampoo. Wrong pH, dries the skin.
- Dish soap. Strips the natural oils completely. Use only in a real emergency (e.g. your dog rolled in something toxic).
- Heavy fragrance. Dogs have a far better sense of smell than humans. A strongly perfumed shampoo is uncomfortable for them.
- SLS-based formulas for daily use. Sodium Lauryl Sulfate is a common foaming agent. It is fine in small amounts but can irritate sensitive skin.
Frequency
Most dogs need a bath once a month. Over-bathing strips the natural oils and leads to dry, itchy skin. Exceptions: a working dog that gets muddy every weekend, or a dog with a skin condition that needs frequent bathing (under vet guidance).
Between full baths, a quick rinse or a waterless shampoo freshen-up keeps the coat manageable.
UK price ranges for 2026
| Type | Typical 500ml price | |------|---------------------| | Everyday oatmeal (own brand, e.g. Pets at Home) | £4 to £6 | | Branded sensitive skin (Animology, Lily's Kitchen) | £10 to £15 | | Veterinary (Douxo, Vet's Best) | £15 to £25 | | Whitening (Chris Christensen) | £12 to £20 | | Waterless foam (Burt's Bees) | £8 to £12 |
A bottle lasts 6 to 12 baths for a medium dog, so a £12 bottle is roughly £1 to £2 per bath.
FAQ
Frequently Asked Questions
Can I use baby shampoo on a dog?
No. Baby shampoo is formulated for the more acidic human skin pH (around 5.5). Dog skin is closer to neutral (pH 7.0 to 7.5). Regular use of baby shampoo dries the skin and can cause itching and flaking.
How often should I bathe my dog?
Most dogs need a bath once a month. Bathing more often strips the natural oils. Working dogs, dogs with skin conditions, or dogs that get muddy may need more frequent baths; ask your vet for guidance.
What is the best shampoo for a dog with sensitive skin?
A fragrance-free, dye-free oatmeal or aloe formula. UK picks include Douxo S3 Calm, Vet's Best Hypoallergenic, and Animology Sensible. If the itching does not improve in 2 to 3 weeks, see your vet.
Pair bath time with our handmade dog accessories - quick-dry bandanas and gentle collars.
Complete UK dog grooming guide How to bathe a dog at home UK Essential dog grooming kit UK Puppy first groom Statham's 23, NW11