One of the most well known and commonly used essential oils, Lavender has an array of benefits and uses ranging from promoting relaxation & calming feelings, soothing the skin, sleep support, soothing head tension and more.  
All Simply Earth essential oils are certified pure and go through GC/MS testing to confirm they contain no additives or fillers as well as confirming the chemical constituents of the oil.  You can view test results for your oil batch at simplyearth.com.