Although I am a trained and certified aromatherapist, I like to minimize the use of essential oils. When they are used, it is for their emotional and skin benefits, not just to cover earthy smells or to just to make products smell good.
Synthetic fragrances and even natural essential oils can be sensitizing and they must be used with caution.
You will find them at low concentrations in M2 facial oil and Sleep Mask (since facial and neck skin is much more sensitive) and at higher concentrations in SpOILed Body and Hair & Scalp line. They are also contained in C1 and C2 since they are wash-off products.
Everything else: C3 AM, C3 PM, M1, M3, lipbalm contains no essential oils whatsoever. What you are smelling in those products are unrefined oils and butters, natural hydrosols and extracts.
Yours in healthy skin care,
Cee