Ideally, a gentleman should have at least four different fragrances. There should be a daily scent that you use regularly and is appropriate for most occasions. Then, you should also own a light, fresh summer cologne for balmy days and a deeper, more broody perfume for the cold winter months. Finally, you'll also want a different fragrance for special occasions. It's a great excuse to splash out on a more expensive perfume, and every time you wear it, it will remind you of all the wonderful experiences you've had and memories you've made.