Iodine stains need special care, as they’re very strong and can cling firmly to fabric.

First, blot up any excess – but don’t rub, as this will only spread the stain. Next, soak the garment in cold water, then treat the area with either alcohol or a stain remover containing sodium thiosulfate (you can usually find this at the pharmacy).

A handy home remedy is to use a starch paste: simply mix starch with a little water into a thick paste, spread it over the stain, leave it to dry, then brush it off.

Finally, wash the garment as usual. For white fabrics, hydrogen peroxide or oxygen bleach (such as sodium percarbonate) can also be effective – but always test on a hidden area first to avoid damage.