What's the esesntial oil/carrier oil ratio? Like how many drops of rosemary and lavendart oil would I need to 2 tsp of jojoba oil for my scalp massages?
For 2 tsp a drop of each will do. Rosemary is a stimulant so too much can be irritating. It also will over-power the lavender, smell wise that is.
What carrier are you using?