That would not be recommended. It can't be easily predicted which constituents of each herb would "survive" the process and which constituents may be affected by the constituents of the other plant. In addition, if you make them separately, you can choose whatever ratio of herbs you want to mix. In the end, taking an extra step should allow you more flexibility.
A 2014 systematic review conducted at the University of Minnesota evaluated 15 quantitative studies, including 11 randomized controlled trials that examined the effects of essential oils on sleep. Researchers found that a majority of the study findings suggest a positive effect of oils on sleep deprivation and disturbances. Lavender oil was the most frequently studied oil and of all evaluated studies, no adverse events were reported. (20)
Health benefits:Clove essential oil has long been used in treatments related to dental care, like toothaches and cavities. It is also used cure infections, skin conditions, stress, headaches, respiratory problems, earaches, indigestion, nausea, blood circulation issues, blood purification, diabetes, immune system weakness, premature ejaculation, cholera, and sties.
As a driving aid. Taking a long driving trip? Be sure to pack the peppermint essential oil. Its ability to wake up the nervous system and keep your brain alert is unmatched. It’s better than coffee and no caffeine jitters! Peppermint oil is also good for kids with ADHD. Add several drops of peppermint oil to a spray bottle containing distilled water, shake it, and spray it lightly on their clothes before studying to help increase concentration and clarity of thought.
Health benefits: It has been known to kill bacteria and inhibits bacterial infection, while removing excess gas from the intestine, promoting digestion, increasing urination, and protecting wounds against becoming septic. It also reduces spasms, removes toxins from the blood, regulates the menstrual cycle, and is good for the response time of the nervous system.
10. Homemade Pore Strips (Freebie Finding Mom) – Homemade essential oil recipes, like this one for pore strips, are an excellent way to save money without sacrificing your appearance. These pore strips pack a real punch thanks to the tea tree essential oil which has anti-microbial, antibacterial, and anti-fungal properties as well as the ability to penetrate deep into your skin and clean out pores.