You certainly could mix olive oil with my one but as it already has Grapeseed, Castor, Coconut, Jojoba, Sweet Almond and Argan oils plus Bergamot, Sandalwood, Orange, Lemon, Lavender, TeaTree, Eucalyptus, Patchouli Essential oils in it I'm not sure why you would want to...I think it's got enough in it already...but by all means experiment to see what serves you best. As mentioned, I usually see the use of Extra Virgin oil...but don't actually know why. Sorry about that. I deff. would add something smelly to it rather than use it on it's own. For perfumes see the Perfume Shop as mentioned in the other thread (stuartc has mentioned it). Or see seller Naissance on Amazon for essential oils. As mentioned by RedHorseman, Tea TreeOil is a good choice (buy it in Savers for economy). The sample is on its way...maybe tomorrow or Tuesday given it's Easter.