Add the essential oils (see notes) to a 60ml/2oz jar, container or bottle. Top up with carrier oil(s).
Give it a little shake to mix all the oils.
Store your serum in a cupboard, preferably out of the sun.
Apply a few drops of the face serum to your face and massage it into your skin for about a minute. This serum is a great overnight treatment and also works well together with a Gua Sha Massage.