The bergamot tree, native to India, appears to have developed from an ancient hybridization between citrus trees, most likely bitter orange and lemon. Bergamot is a citrus fruit known for its essential oil, which is contained in the oil-bearing pockets in the peel of the pericarp. This refreshing, zesty fragrance is an ingredient in the famous Eau de Cologne, along with neroli and lavender. Bergamot is a small green-yellow fruit with sour, bitter pulp. When in bloom, the bergamot, a small tree reaching four meters in height, is covered with a multitude of fragrant, white flowers. The fruits ripen between December and March.
 
Aromatherapy Applications:
Uplifting and energizing 
Great for balancing and centering 
Concentraton and alleviate fatigue 
 
Details: 
Botanical Name: Citrus bergamia
Family: Rutaceae
Country of Origin:  Italy   
Extraction Method  : Cold Pressed  
Plant Part Used  : Pericarp / peel 
Note  : Top Note  
Aroma : Citrusy, lemony, zesty, green, lavendery.
Color : A green to yellowish green or yellowish brown liquid
Blends well With :  Florals, citrus and woods  
Shelf Life : 4 – 5 Years
 
Aromatherapy Uses:
Help with emotional stability 
Harmonizing 
Help calming 
 
Safety
Photosesitizer, use caution when using and don't go out in the sun 
Phototoxic (moderate risk), may be photocarcinogenic; a maximum dermal use level of 0.4% in the final product, except for wash-off products, is recommended to avoid phototoxicity. If applied to the skin at over maximum dermal use level, skin must not be exposed to sunlight or sunbed rays for 12 hours
For topical application don’t use directly on skin, dilute with a carrier oil 
Discontinue use if skin sensitivity occurs
Add 4-5 drops for Diffusing
Don’t ingest
Keep out of reach of children , Avoid using if pregnant or nursing
 
References:
Essential oil safety ( Tisserand and young ) second Edition
Charles Fetrow & Julian Avila (2000) The Complete Guide to Herbal Medicine
Lawrence BM, Essential oils from Agriculture to Chemistry
The Complete Guide to Aromatherapy, Salvatore Battaglia