doTERRA essential oil is carefully and thoroughly tested using the strict CPTG Certified Pure Therapeutic Grade® quality protocol. Good Night Sleep Tight Blend is using a mixture of lavender and cedarwood to be put on the pressure points or on the bottom of the feet before going to bed. Refer to link below for more information. http://joydropoils.blogspot.sg/2015/06/lavender-and-cedarwood-youve-heard-me.html?m=1 Comes in a 15ml roller bottle. Bottle if returned to seller will get $1 refund for the next purchase. Also selling other types of blends for different uses. PM me for the price for other blends if interested!