The 'blue essential oils' contain the chemical constituent: 'Chamazulene'.
Chamazulene is a powerful antioxidant.
It inhibited lipid peroxidation in a concentration and time dependent manner.
No toxicity data for chamazulene.
A deep blue oil extracted from the chamomile flower.
It is a "natural" anti-inflammatory agent used in herbal remedies and cosmetic products.
External use ONLY.
Do NOT use undiluted on the skin.
Keep away from children and pets.
Store away from heat and light.
Great Article written by Eva Marie Lind: Azulene and Chamomile
Essential Oil Safety by Robert Tisserand / Rodney Young