Essential oils are natural products to unknown powers. Puressentiel has a wide selection which I use for a long time. My two favorite are the sanitizing products to the 41 oils and relaxing sleep spray, true happiness scents at bedtime. This two sprays is beneficial (at least at the time to write this review). Indeed, prices vary greatly from week to week. For products, observe the instructions, apply to all essential oils, natural product, but use with caution.