The classic white button-down is a strong weapon in any dude's arsenal. Sadly, its strength of style is not matched by a resilience to the stains, wear and dulling that are the lot of any much-loved wardrobe staple. 

Luckily (to save you going full Don Draper and keeping a fresh stack in your desk drawer) ASOS Stylist James Welsh has some quick and easy tips for reviving a worn out white shirt. Check it.