Most of us like a bit of scent to our products and here's a good way to do it.
Fragrance oils will only give a scent - there are no therapeutic benefits but they do smell nice and give you the opportunity to make your products smell of amazing things such as Bay Rum or Driftwood.
Essential oils on the other hand do have therapeutic benefits.
Consider the following:
Remember that all essential oils should be used in a carrier oil and not directly on the skin.