Below, Smith shares more details on the different fragrance categories and which scents you might want to choose.

And in case you want to recreate your scent later, don’t forget to record your custom recipe.

Once mixed, pour into your container of choice and allow to set.

Bottle of perfume oil with rock, stick, and piece of wood

Ohlamour Studio/Stocksy

Apply it behind your ear, on your collarbone, and across your chest to help diffuse the scent.

The nape of the neck is another spot for perfume oils to make a lasting impact.

International Fragrance Association.IFRA Standards.