Believe by Britney Spears is a Floral Fruity fragrance for women. 

Top notes :

•  Guava and Tangerine

Middle notes :

• Lime Blossom and Honeysuckle

 Base notes :

•  Patchouli, Praline and Amber.

Suggested Usage:

• The fragrance is intensified by the warmth of your own body. Apply 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. 

Eau de Toilette or Eau de Parfum?

The difference lies in the volume of perfume oil. While EDT contains five to nine percent, EDP contains more, usually eight to 14 percent. EDPs, therefore, last longer and smell more intense.