The Groom Professional Mandarin and Rose Shampoo in the 450ml bottle -- the everyday size of the brand's best-known luxury fragrance.

Key Features

• Mandarin and rose: Citrus over florals, and it holds on the coat for days
• Deep cleaning: Strong enough for a properly dirty coat at 20:1
• Softens the coat: Aimed at a smooth, brushable finish
• All coat types: No particular requirement
• Concentrate: Dilutes 20:1
• Size: 450ml

This Is A Concentrate -- Dilute It

Groom Professional give this one a dilution of 20:1, which means 20 parts water to one part shampoo. That is how a salon makes a 450ml bottle last, and it matters for the dog too: neat professional shampoo is far stronger than a coat needs and strips the oils out of the skin. Mix what you need in a jug or a bottle before the dog gets in the bath, and mix it fresh rather than keeping diluted shampoo for weeks.

How To Use It

• Brush the coat out before it gets wet. Water turns a loose tangle into a solid mat.
• Soak the coat right through with lukewarm water first -- diluted shampoo will not penetrate a dry double coat.
• Work it in from the neck down so the suds run away from the face.
• Leave it on for five to ten minutes. Groom Professional build these to work with a bit of contact time, and rushing the rinse is what wastes the product.
• Rinse until the water runs clear, then towel off and brush the coat as it dries.

How Often To Wash

Most dogs do not need a bath more than once every four to six weeks, and plenty need less. Washing more often strips the oils that keep a coat weatherproof and the skin comfortable, which can leave a dog itchier than it started. Salons wash frequently because they are working to an appointment, not because a dog benefits from it.

Who Makes It

Groom Professional launched in 2009 on the Causeway Coast in Northern Ireland and is sold through the grooming trade supplier Christies Direct. The range was built for working salons rather than for the bathroom cupboard, which is why so much of it comes as a concentrate and in four-litre sizes. Groom Professional say the products are manufactured in the UK.

Good To Know

• There are several Mandarin & Rose listings on the site in different formats -- a 450ml shampoo, a 4L shampoo, two 500ml shampoo-and-cologne listings and a 200ml cologne. Check the size before you order.
• This is a dog product. Do not use it on a cat unless the label specifically says you can -- cats groom everything off their coat and swallow it, and they handle fragrance and essential oils far less well than dogs do.
• Keep it out of the eyes, ears, nose and mouth. Rinse with clean water if any gets in.
• Groom Professional's published ingredients for this one include methylisothiazolinone and methylchloroisothiazolinone. They are common preservatives and they are also known skin sensitisers, so wear gloves if you bath dogs all day, and stop using it if the skin goes red or itchy.
• A shampoo cleans; it does not treat disease. Broken, scabby or weeping skin, bald patches, a smell that returns within days of a bath, or scratching to the point of bleeding all need a vet rather than a different bottle.
• Keep it out of reach of children and store it somewhere cool and dry.