To wear this biohazard costume, first put on the dress. Then, tie the apron around your waist to give it a more authentic look. Place the hat on your head and put on the mask and gloves. When using this costume, make sure the mask fits properly so it doesn't fall off during your Halloween activities. For maintenance, always remember to dry - clean it only. Avoid getting it wet or using regular washing methods as it might damage the fabric and the overall look of the costume. Store it in a cool, dry place when not in use to keep it in good condition.