History:
Lemongrass was used for ages as a food ingredient in the far East cuisines especillay in the Tahi ones , in addition to that it is  being widely used in TCM for various conditions.
 
Details:
Botanical Name : Cymbopogon flexuosus
Family : Poaceae 
Country of Origin  : India 
Extraction Method  : Steam Distellation 
Plant Part Used  :  Leaves 
Note  :  Middle 
Aroma :  Citrus-fresh-green 
Color : Yellow color 
Blends well With : Lemon,orange,Geranuim,Patchuoli,Sandalwood,Basil, Peppermint.
Shelf Life : 4 – 5 Years
 
Safety 
Drug interaction (those metabolized by CYP2B6); teratogenicity; skin sensitization - avoid use on hypersensitive, diseased, or damaged skin, with a maximum dermal use level of 0.6% is recommended.
 Dilute before using. A patch test should be performed before use for those with sensitive skin.
For topical application don’t use directly on the 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
https://www.foodchemicalscodex.org/
Lawrence BM, Essential oils from Agriculture to Chemistry
The Complete Guide to Aromatherapy, Salvatore Battaglia
Arcatender Perfume and flavor materials of natural origin