A white coat shows every bit of yellowing or dullness that a darker one hides, which is why coat-brightening shampoos exist as their own category rather than being folded into an everyday wash.

This is a ready-to-use shampoo — no dilution needed — built to enhance white and light coats using natural extracts of cucumber, passion flower, lemon and lime. Wahl's directions are to saturate the coat with warm water, work the shampoo into a foamy lather from head to tail, then rinse thoroughly and towel dry.

• 250ML bottle, ready to use, no dilution needed
• Enhances white and light coats
• Contains cucumber, passion flower, lemon and lime extracts
• Paraben, phthalate, sorbate, phosphate and DEA free
• Vegan friendly and gluten free
• Suitable for all animal hair types

One thing worth knowing. This is a coat-brightening shampoo, not a whitening dye or a stain remover — it works with natural extracts rather than optical brighteners, so don't expect it to lift a deep, set-in stain the way a specialist stain-removal product might.

Who it's for: owners of a white or light-coated dog, cat or other animal who want the coat looking its best, without diluting a concentrate first.