A hot iron can leave a scorch mark on your dress while ironing. But don't worry we won't let you discard your dress.
Keep the stain on your dress wet with few drops of both ammonia and hydrogen peroxide. Leave it for around 30 minutes or more depending on the severity of the scorch mark. Then rinse it with washing powder.
You can also try rubbing some vinegar onto the stain/mark and wipe it with a clean cloth.
Also watch: Easy hack: This tablet can be a saviour in removing stubborn stains from clothes