Fragrance is intensified by the warmth of your own body. Apply perfume in the creases of your knees and elbows for a longer-lasting, stronger scent.; After applying, avoid rubbing or dabbing skin. This breaks down the fragrance, causing it to wear off more quickly.; If you prefer placing fragrance on your wrists, be sure to reapply after frequent hand-washing, as this tends to rinse off the scent.; Replace fragrance after 12 months. Expired perfumes more than a year old lose the integrity of the original scent.