Itchy skin doesn't keep to a schedule — a dog that's fine all week can start scratching the moment the grass is cut, or the heating goes on, and by the time you notice, it's usually been going on longer than you'd think.

This is a 5 litre trade-size shampoo built around oatmeal extract with added vitamin B, which Johnson's say soothes and nourishes itchy skin. It's made in the UK and described as vegan friendly, and — like the rest of Johnson's pro shampoo range — sold in bulk rather than as a small retail bottle.

• 5 litre bottle
• Oatmeal extract with vitamin B
• Soothes and nourishes itchy skin
• Made in the UK
• Vegan friendly

On what's missing from this label. Johnson's don't name a species restriction or give guidance on how often to use it, so this reads as a general skin-soothing shampoo rather than a treatment for a diagnosed skin condition — persistent or worsening itching, redness or hair loss is worth a vet visit rather than more frequent washing.

Who it's for: owners washing a dog with regularly itchy or sensitive skin often enough that a small retail bottle wouldn't last, and who'd rather use a vegan-friendly, UK-made formula.