Fabric softener stains usually appear when the liquid touches the fabric in concentrated form – for example, if it is poured directly onto clothes or not properly diluted during washing.

To remove the stain, start by rinsing the garment with cold water. Rub in a little liquid detergent or dab with a solution of water and vinegar, then leave it to work for 15–20 minutes. Rinse thoroughly, then wash the garment again as usual.

If the mark persists, make a paste of baking soda and water, gently rub it into the affected area, and rinse well before the next wash.