The present invention relates to an essential oil of Satureja montana comprising more than 60% by weight of geraniol and more than 5% by weight of trans-β-caryophyllene, in particular of Satureja montana L. ssp. variegata. The present invention also relates to the cosmetic use of an essential oil of Satureja montana comprising more than 60% by weight of geraniol and more than 5% by weight of trans-β-caryophyllene, in particular of Satureja montana L. ssp. variegata, for treating greasy skin and/or preventing greasy or greasy-prone skin and/or the associated aesthetic skin defects. The invention also relates to a cosmetic composition comprising said oil, to a non-therapeutic cosmetic care and/or cleansing treatment process for greasy skin, and also to said essential oil as a dermatological agent
