Once you pick a flower, it has an expiration date set on it. Although it is possible to prolong the look of fresh flowers, they inevitably will wither and discolor. However, there are a few tricks available to extend the beauty of the flower, including the use of hairspray. Hairspray helps hold the flower firm and prevents wilting for an additional few days (as long as you consistantly reapply it). This is helpful if you or another event approaching and you need the flowers to last for several days.
Remove the flowers from the vase. Spraying the flowers while in the vase results in the flowers sticking to the vase.
Spray the hairspray on the flowers from several inches away. Do not move the spray can too close to the flower as the force from the spray may damage the flower.
Hang the flowers upside down in a well-ventilated area until the hairspray dries.
Position the flowers back in the vase. Reapply the hairspray every few days or as needed to keep the flowers looking pristine.